An idiom meaning "failure is not the end"
Solution 1:
The harder they/you fall, the higher they/you bounce.
Solution 2:
If at first you don't succeed, try, try again.
Solution 3:
Success consists of going from failure to failure without loss of enthusiasm. ~ Winston Churchill
In order to succeed you must fail, so that you know what not to do the next time. ~Anthony J. D'Angelo, The College Blue Book