Self-discipline, which walks hand-in-hand with perseverance, is a key ingredient in the formula leading to success and happiness.
In his book “A Guide to the Good Life: The Ancient Art of Stoic Joy,” William B. Irvine again and again examines the advantages bestowed by self-control. His chapter titled “Self-Denial” addresses the benefits the ancient Stoics found in denying themselves certain pleasures—for example, abstaining from eating rich foods in favor of more common fare and finding rewards in that act of denial.