KARMA. No need for revenge. Just sit back & wait. Those who hurt you will eventually screw up themselves & if you're lucky, God will let you watch.
Two things to remember in life. Take care of your thoughts when you are alone, and take care of your words when you are with people.
Speak only when you feel your words are better than the silence.
Expect more from yourself than from others. Because expectations from others hurt a lot, while expectations from yourself inspire a lot. That's life.
Never tolerate disrespect. The more chances you give someone the less respect they'll start to have for you. They'll begin to ignore the standards that you've set because they'll know another chance will always be given. They're not afraid...