You may think that developing discipline is all about limitations.
Previous attempts at changing bad habits through discipline have probably reinforced this thought. Think back to when you successfully changed your behavior. How did you feel? When you overcame obstacles in your path and accomplished something with consistent work, you felt like you could do anything. However, when discipline wasn't a priority, you didn't accomplish your goals and felt like you weren't worthwhile. Putting yourself down more and having a more negative outlook on life. Setting yourself up for health issues or had trouble in your relationships with friends and family.
Success doesn't show up just because of luck.
Make goals, plan how to achieve them, and then develop the discipline to accomplish those goals and plans. Failure happens, you have obstacles, and you may even change goals or go in a different direction. If you want to succeed, you need discipline. Get rid of bad habits like smoking, gambling, and overeating. Form good habits such as exercising, reducing clutter, reading more books, watching less television, or saving money. You can accomplish these habit changes if you focus on one or two at a time and consistently act on those goals. One is best, but if you are trying to lose weight, for instance, you may find it better to combine dietary changes with exercise.
The biggest obstacle to discipline is not lack of willpower, but a desire for instant gratification.
Especially in modern society, everything seems to be focused on having things done quickly. People eat instant oatmeal or cold cereal instead of having a cooked breakfast. You grab a burger at a fast-food restaurant instead of bringing a healthy lunch to work. Television commercials say you can have what you want, right now if you pay by credit card. The problem with that, of course, is the interest you later have to pay. Even though you are deciding based on the short-term, the consequences will still affect your life for the long-term.