Self-denial is an act of letting go of the self as with altruistic abstinence – the willingness to forgo personal pleasures or undergo personal trials in the pursuit of the increased good of another. (wikipedia)
Discipline is defined as a field of study or is training to fix incorrect behavior or create better skills. In addition, discipline is deemed as training that’s expected to produce a specific character or pattern of behavior, especially training that produces moral or mental improvement.
So now that you have a better understanding of discipline and self-denial; ask your self do you have discipline? Are you able to deny yourself ?
For example, if I choose to not eat any candy or chips and one day I go around friends/family and they offer me candy/chips. Would you have the discipline to deny yourself ?
If you would have the discipline to deny yourself; you will build your willpower overtime. Meaning your ability to deny yourself will become stronger and stronger.
Just like in the story of the “two wolves” whatever you feed the most will win. If you don’t have the ability to deny yourself, if you don’t have the ability to be discipline; then you are strengthening your ability to be undisciplined. Also, you are making it harder for you to deny yourself.
Discipline is an essential trait to habit to be successful in all areas of your life; It goes hand and hand with self-denial. These two traits will help you become a better you and strengthen your will power which is the ability to control yourself : strong determination that allows you to do something difficult (such as to lose weight or quit smoking).