It's always too early to quit.
Expect problems and eat them for breakfast.
Do not weep do not wax indignant. Understand.
Leap, and the net will appear.
Never complain and never explain.
Go for it now. The future is promised to no one.
Things do not happen. Things are made to happen.
I can, therefore I am.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
Science is a differential equation. Religion is a boundary condition.