How to be disciplined is not easy to answer, as having self-control over those things that we struggle with can make us feel that our willpower is never quite enough. Don´t get frustrated and keep in mind that willpower is like a muscle and it gets stronger with regular use. As Roy F. Baumeister, PhD, author of the book Willpower: Rediscovering the Greatest Human Strength writes, “willpower is not a personality trait, a skill or a virtue. Instead, it operates like a muscle. And as such, it can be strengthened.” Here are 10 ways to think about how to be disciplined.