Don't quit

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 'til 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 nigh,
Don't quit, for your not a failure,
Until you fail to try.

Was fixing my files and I saw that I documented a great poem years back... I really need to be reminded not to quit.