The degree of self-control you have is in direct proportion to the degree of self-acceptance you have. Put another way, if you don't value yourself, you won't "pull in the reins" on negative actions and attitudes.
(Gary Smalley and John Trent, The Hidden Value of a Man)

Proverbs 16:32 NLT
It is better to be patient than powerful; it is better to have self-control than to conquer a city.