Self-Discipline and Delayed Gratification: The Complete Guide to Building Self-Control That Lasts

Self-discipline is the ability to do what you have decided to do, even when you don’t feel like it. Delayed gratification is one of its core forms: giving up a smaller reward now for a larger one later. Research links both to better health, finances and achievement, and suggests they rely more on good habits than on constant willpower.

Personal development skill · Themes: self-control, habits, long-term thinking, willpower

Last updated: 13 November 2026

Written by Saj Ali

Reading time: about 11 minutes

How we wrote this guide: this guide was written by Saj Ali. It draws on Brian Tracy’s _No Excuses! The Power of Self-Discipline_ (2010) and _Eat That Frog!_ (2017), and on major research on self-control, including the Dunedin study and the marshmallow test and its replication. Every research claim links to its source.

Self-discipline in brief

• Definition. Doing what you should do, when you should do it, whether you feel like it or not.
• Delayed gratification. Choosing the bigger, later reward over the smaller one now.
• What research shows. Childhood self-control predicts adult health, wealth and safety.
• The surprise. People with high self-control rely on habits more than willpower.
• Pairs well with. Goal setting and Eat That Frog.

Contents

1. What Is Self-Discipline?
2. Delayed Gratification and Long-Term Thinking
3. What the Research Shows
4. What the Research Says: At a Glance
5. How to Build Self-Discipline: Step by Step
6. A Worked Example
7. Common Mistakes
8. Frequently Asked Questions
9. Key Takeaways
10. Explore More on Self Help Supermarket
11. Sources

What Is Self-Discipline?

Brian Tracy opened No Excuses! The Power of Self-Discipline with a definition he credited to the American writer Elbert Hubbard: “Self-discipline is the ability to do what you should do, when you should do it, whether you feel like it or not” (Tracy, 2010). He used the same definition in Eat That Frog! (Tracy, 2017).

Tracy called self-discipline “the key to personal greatness”, and built the book around applying it to every part of life, in 21 chapters across three parts: personal success; business, sales and personal finance; and personal life, from health and marriage to peace of mind (Tracy, 2010). Psychologists usually call the same capacity self-control: the ability to align what you do with your longer-term goals when an immediate impulse pulls the other way.

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Delayed Gratification and Long-Term Thinking

Two ideas run through Tracy’s writing on self-discipline (Tracy, 2010).

Delayed gratification

“Self-discipline requires delayed gratification, the ability to put off satisfaction in the short term in order to enjoy greater rewards in the long term.” Tracy traced most money problems to it: “The primary reason for financial problems in life is lack of self-discipline, self-mastery, and self-control. It is the inability to delay gratification in the short term.”

Long time perspective

Tracy repeatedly cited the Harvard sociologist Edward Banfield. In Tracy’s account, Banfield concluded that “the most important single attribute of people who achieved great success in life was ‘long time perspective’”, which Banfield defined as “the amount of time an individual takes into consideration when determining his present actions” (Tracy, 2010; Tracy, 2017). Tracy drew the lesson that successful people “make sure that everything they do in the short term is consistent with where they want to end up in the long term”.

He added: “Perhaps the most important word in long-term thinking is sacrifice” (Tracy, 2010). For more on how this fits his overall philosophy, see our Brian Tracy article.

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What the Research Shows

Self-control is one of the most studied traits in psychology. These are the key findings.

Childhood self-control predicts adult life

Terrie Moffitt and colleagues followed a cohort of 1,000 children in Dunedin, New Zealand, from birth to age 32. Childhood self-control predicted physical health, substance dependence, personal finances and criminal offending, following a gradient: the more self-control, the better the outcomes. The effects held after accounting for intelligence and social class, and in a second cohort of 500 sibling pairs, the sibling with lower self-control had poorer outcomes despite the shared family background (Moffitt et al., 2011).

Self-discipline outdid IQ in predicting grades

Angela Duckworth and Martin Seligman found that, in eighth-grade students, self-discipline measured in the autumn accounted for more than twice as much variance as IQ in final grades and several other outcomes, such as attendance and homework hours (Duckworth & Seligman, 2005).

The marshmallow test, and its replication

Walter Mischel’s research programme found that 4-year-olds who waited longer for a larger treat in certain lab situations developed into more cognitively and socially competent adolescents (Mischel, Shoda & Rodriguez, 1989). A 2018 replication by Tyler Watts, Greg Duncan and Haonan Quan, with a larger and more diverse sample, found a smaller association, about half the original size, and it shrank by two-thirds after controlling for family background, early cognitive ability and the home environment (Watts, Duncan & Quan, 2018). The lesson is that delay of gratification matters, but it is shaped by circumstances as well as character.

Self-control works through habits

A meta-analysis of 102 studies by Denise de Ridder and colleagues found a small-to-medium positive effect of self-control on behaviour, and that the link was stronger for automatic behaviours than for deliberate ones (de Ridder et al., 2012). Brian Galla and Angela Duckworth then showed, across six studies, that people with better self-control use less effortful inhibition in daily life, because they rely on beneficial habits, such as regular exercise, healthy snacks and consistent study routines (Galla & Duckworth, 2015).

Willpower is not simply a fuel tank

The idea that self-control is a limited resource that “runs out”, known as ego depletion, was tested in a large preregistered replication across 23 laboratories with more than 2,000 participants. The effect was close to zero (Hagger et al., 2016). That doesn’t mean effort is never tiring, but the popular image of a fixed willpower tank is weaker than once believed.

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What the Research Says: At a Glance

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How to Build Self-Discipline: Step by Step

The research points to a practical conclusion: build routines that make the right action easy, rather than relying on willpower in the moment. Tracy’s advice fits that, once it is turned into steps.

1. Choose one area. Pick one place where you know what you should do but don’t, such as saving, exercise, study or your frog at work.
2. Define the behaviour exactly. “Walk for 30 minutes before breakfast”, not “get fit”.
3. Tie it to a fixed cue. The same time and place each day. In habit research, a consistent context helped behaviours become automatic (Lally et al., 2010).
4. Make an if–then plan for the hard moment. “If I don’t feel like going, then I put my shoes on and walk to the end of the road.” If–then plans have strong evidence (Gollwitzer & Sheeran, 2006).
5. Change the situation, not just yourself. Temptations are shaped by circumstances (Hofmann et al., 2012). Keep snacks out of the house, put your phone in another room, set up automatic savings.
6. Track every day you keep it. Progress monitoring helps people reach goals (Harkin et al., 2016).
7. Ask the long-term question. Before a tempting choice, ask how it will look in five or ten years.
8. Expect it to take months. In one study, new habits took anywhere from 18 to 254 days to become automatic, and missing a day didn’t matter (Lally et al., 2010).

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A Worked Example

Tom wants to save a deposit for a flat but always ends the month with nothing left.

The automatic transfer removes most of the daily decisions. Self-discipline becomes a system, not a struggle.

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Common Mistakes

• Relying on willpower alone. Design your environment so the right choice is the easy one.
• Taking on too much. Start with one discipline. Add another only when the first is automatic.
• All-or-nothing thinking. Missing a day is normal. What matters is getting back on track.
• Vague intentions. “Be more disciplined” isn’t a plan. “Run at 7 a.m. Monday, Wednesday and Friday” is.
• Ignoring circumstances. If you are exhausted, stressed or short of money, discipline is harder for everyone. Fix what you can in the situation, and be patient with yourself.

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Frequently Asked Questions

What is self-discipline?

Self-discipline is the ability to do what you have decided to do, even when you don’t feel like it. Brian Tracy used a definition he credited to Elbert Hubbard: “the ability to do what you should do, when you should do it, whether you feel like it or not.”

What is delayed gratification?

It is giving up a smaller reward now for a larger reward later, such as saving money instead of spending it, or studying instead of watching television.

Does the marshmallow test predict success?

The original research found that children who waited longer did better in adolescence. A larger 2018 replication found the link was about half as strong and became much smaller after accounting for family background and early ability.

Is willpower a limited resource?

The popular idea that willpower runs out like fuel has weak support. A preregistered replication across 23 laboratories found an effect close to zero.

How can I improve my self-discipline?

Choose one specific behaviour, tie it to a fixed time and place, make an if–then plan for difficult moments, change your environment to reduce temptation, and track your progress. Research suggests self-disciplined people rely on habits rather than constant willpower.

How long does it take to build self-discipline?

It depends on the habit. In one real-world study, it took between 18 and 254 days for new behaviours to become automatic.

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Key Takeaways

• Self-discipline is doing what you should do, whether you feel like it or not.
• Delayed gratification and long-term thinking were central to Brian Tracy’s teaching.
• Childhood self-control predicts adult health, wealth and safety in long-term research.
• Disciplined people rely on habits and good environments more than on willpower.
• Start with one behaviour, plan for the hard moments and track your progress.

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Explore More on Self Help Supermarket

Use these pages alongside this one:

• Eat That Frog – apply self-discipline to your most important task
• Goal Setting: The Complete Guide – decide what your discipline is for
• Morning Routine: The Golden Hour – a daily discipline to start with
• Atomic Habits Summary – James Clear on building habits
• Bad Habits – how to break habits that hold you back
• Procrastination – why we delay and what helps
• Brian Tracy: His Life, Philosophy, Techniques and Legacy – the full system
• Brian Tracy: expert profile – his books, videos and key ideas
• Browse all self-help techniques – compare every method on Self Help Supermarket.

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Sources

1. Tracy, B. No Excuses! The Power of Self-Discipline. Vanguard Press, 2010.
2. Tracy, B. Eat That Frog! 21 Great Ways to Stop Procrastinating and Get More Done in Less Time, 3rd edition. Berrett-Koehler, 2017. O’Reilly listing. https://www.oreilly.com/library/view/eat-that-frog/9781626569430/
3. Self Help Supermarket. “Brian Tracy (1944–2026): His Life, Philosophy, Techniques and Legacy”. https://www.selfhelpsupermarket.com/brian-tracy-tribute/
4. Moffitt, T. E., Arseneault, L., Belsky, D., Dickson, N., et al. (2011). A gradient of childhood self-control predicts health, wealth, and public safety. Proceedings of the National Academy of Sciences, 108(7), 2693–2698. https://doi.org/10.1073/pnas.1010076108
5. Duckworth, A. L., & Seligman, M. E. P. (2005). Self-discipline outdoes IQ in predicting academic performance of adolescents. Psychological Science, 16(12), 939–944. https://doi.org/10.1111/j.1467-9280.2005.01641.x
6. Mischel, W., Shoda, Y., & Rodriguez, M. L. (1989). Delay of gratification in children. Science, 244(4907), 933–938. https://doi.org/10.1126/science.2658056
7. Watts, T. W., Duncan, G. J., & Quan, H. (2018). Revisiting the marshmallow test: A conceptual replication investigating links between early delay of gratification and later outcomes. Psychological Science, 29(7), 1159–1177. https://doi.org/10.1177/0956797618761661
8. de Ridder, D. T. D., Lensvelt-Mulders, G., Finkenauer, C., Stok, F. M., & Baumeister, R. F. (2012). Taking stock of self-control: A meta-analysis of how trait self-control relates to a wide range of behaviors. Personality and Social Psychology Review, 16(1), 76–99. https://doi.org/10.1177/1088868311418749
9. Galla, B. M., & Duckworth, A. L. (2015). More than resisting temptation: Beneficial habits mediate the relationship between self-control and positive life outcomes. Journal of Personality and Social Psychology, 109(3), 508–525. https://doi.org/10.1037/pspp0000026
10. Hagger, M. S., Chatzisarantis, N. L. D., Alberts, H., Anggono, C. O., et al. (2016). A multilab preregistered replication of the ego-depletion effect. Perspectives on Psychological Science, 11(4), 546–573. https://doi.org/10.1177/1745691616652873
11. Hofmann, W., Baumeister, R. F., Förster, G., & Vohs, K. D. (2012). Everyday temptations: An experience sampling study of desire, conflict, and self-control. Journal of Personality and Social Psychology, 102(6), 1318–1335. https://doi.org/10.1037/a0026545
12. Lally, P., van Jaarsveld, C. H. M., Potts, H. W. W., & Wardle, J. (2010). How are habits formed: Modelling habit formation in the real world. European Journal of Social Psychology, 40(6), 998–1009. https://doi.org/10.1002/ejsp.674
13. Gollwitzer, P. M., & Sheeran, P. (2006). Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology, 38, 69–119. https://doi.org/10.1016/S0065-2601%2806%2938002-1
14. Harkin, B., Webb, T. L., Chang, B. P. I., Prestwich, A., et al. (2016). Does monitoring goal progress promote goal attainment? A meta-analysis of the experimental evidence. Psychological Bulletin, 142(2), 198–229. https://doi.org/10.1037/bul0000025