"Being deeply loved by someone gives you strength, while loving someone deeply gives you courage."-- Lao Tzu

When you are loved, you have the strength to overcome temptation for the sake of they who love you.
When you love--and the best example is a parents love for a child--protecting that child brings out the grizzly bear in even the most mild mannered mom or dad.
You can have these same protective feelings for anything you love: our mother earth or the god you worship for example.
Hopefully we will learn to love ourselves with the same fervor.