How to overcome discouragement

I have read the book "The difference maker" about attitude by John C.maxwell. It is lovely book. It is quite true that eveyone faces discouragement at some part of their life. It should not stop us from looking positively. Many great people became great only after facing lot of discouragement. So friends look ahead for success. Get up everytime you fall. Your greatness is in getting up everytime you fall.