Never loose you hope . If you failed try thousand times again. Don't think the time which is consumed during those thousand trials has wasted away. Those thousands trials has taught you not to repeat the same mistake again in your life. And in those thousands trials you came to know about thousands ways from which the particular thing cant be solved and you will come up with some new method of solving it, so always remember you must Try One More Time before giving up.
Failures gives you experiences . And after every failure there is definitely success.
Famous Quote By Les Brown- "ITS NOT OVER UNTIL I WIN."