Don't live in the past and don't carry the past around like a burden.
You must either modify your dreams or magnify your skills
A pessimist doesn't see the sunset outside, he sees the dirt on the window.
The greatest source of unhappiness comes from inside.
Learn from the negative as well as the positive, from the failures as well as the successes.
Care enough to make a difference. Care enough to turn somebody around. Care enough to change. Care enough to win.