why we fail

I fail because i do not try harder ,I try at the same time being afraid of what will happen if i succeed.Or is because i am afraid of falling down from the top and going back to were i started .Where is me ? where is my faith and where is my power ,my strength to move forward . I back my inner power to respond during my decision making ,to respond when ever i am down on my fase. call me everything but i am not a coward ,is like there is a loser demon inside me who want me to loose too.