When you do something wrong, you must always use it to build rightness -- which is the same as happiness. Never permit a mistake to push you downward into pain and self-hate. Instead, allow the error to carry you upward to where you can see why it happened. Maybe you snap angrily at someone, then see its wrongness. Remain with your rightness of seeing its wrongness. That heals you. Each day you will make fewer and fewer harmful mistakes.