Self-discipline is the ability to get yourself to do the things that you need to do, whether you like it or not. It is that invisible muscle that allows you to persevere and keep going despite of set-backs. It is also the ability to manage temptations and distractions.
Self-discipline helps you win in life. It increases your self-esteem, self-confidence, and mental strength. It helps you make the most out of your day and your life.