If you're going through hell, keep going.
After a storm comes a calm.
Be gentle to all and stern with yourself.
The secret of getting ahead is getting started.
If you think you can do it, you can.
It's always too early to quit.
Wherever you are - be all there.
Go for it now. The future is promised to no one.
Never complain and never explain.
Things do not happen. Things are made to happen.
It sounds cliche, but success is your friends, your family, what you do, and if you're happy when you wake up.