Don't quit when the tide is lowest,
For it's just about to turn

Don't quit over doubts and questions
For there's something you may learn

Don't quit when the night is darkest
For it's just a while 'till dawn

Don't quit when you've run the farthest
For the race is almost won

Don't quit when the hill is steepest
For your goal is almost high

Don't quit, for you're not a failure
Until you fail to try

《少扯蛋，多挣钱》

i will never ever quit...

I will quit when I know I can't do it.
and forget it forever, never mind at all.