Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.
Develop success from failures. Discouragement and failure are two of the surest stepping stones to success

Dale Carnegie
If you can dream it, then you can achieve it. You will get all you want in life if you help enough other people get what they want.

Zig Ziglar

Success is not final; failure is not fatal: It is the courage to continue that counts.

-Winston Churchill