This thought is destroying my life!!?

I began thinking about talent and where it comes from. I then started to think that if someone is naturally talented or it was god-given then this means that their talent controls them and they didnt earn it. For example beethoven started writng peices at the age of seven and if he was born with that then where is the hardwork and greatness in all of that. This has extended to me asking alot of questions about myself and now I question my football ability and feel depressed if I didnt earn that talent myself. Now I tell myself there is no such thing as a genious and I feel like crying. I want to feel that I earned my skills through hard work and the right attitude, not because god "if he exists" or genetics gave me it. I am so depressed and I am only 15 when I should be excited and ignorant in a good sort of way! please help me realise that i have earned my gifts. PLEASE!!!!!!!!!!!!!!