"I count him braver who overcomes his desires than him who conquuers his enemies;
for the hardest victory is the victory over self."
"While we may not be able to control all that happens to us,
we CAN control what happens inside us.
"He who conquers his anger has conquered an enemy."
How can you have any kind of work ethic, or any cooperation without self control? Besides that, without self-control, you cannot remain loyal and you're liable to lose friends. Having self control, means being responsible and it's part of maturity. I tell students that to be responseable is being response-able, that means being able to control your RESPONSE to anything that happens and anything that anyone else says or does.