It's always too early to quit.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
Do not weep do not wax indignant. Understand.
Only the educated are free.
Wherever you are - be all there.
Be thine own palace, or the world's thy jail.
The dog that trots about finds a bone.
Expect problems and eat them for breakfast.
Go for it now. The future is promised to no one.
The one phrase you can use is that success has a thousand fathers, and failure is an orphan.