Self control
This is one of the fruits of the Spirit mention in the bible. It is a strong force to success in life. Ability to control self kept Joseph dream alive, when he refused to conformed to the temptation of potiphar's wife. What ever you do, you have 100% percent right to choose whether to do it or not. Aristotle says "what lies in our power to do, also lies in our power not to do." Scriptures made it clear when it states we are inexcusable (Romans 2:1). Enjoyment is obtained not by having what you desire but by controlling desire itself. Self control is the restraint exercise over our impulse, emotion and desire. It is the capacity for keeping our words and actions under control (In this Samson was a victim). Without self control we create trouble for our self. A person without self-control is like a city without walls.