Talent trouble?

Hello, I am a young girl, and i have an interesting problem...

I have recently become a little self conscious about my talents. (im no good at anything) I basically have one talent,(outside of this:) i ride horses, im not bragging, but lots of people have told me i have a natural gift with horses... But, recently my horse got sick, and i have nothing to ride! My family cant lease a horse, and the people i was riding with, told me I couldn't ride with them anymore (no given explanation) I have no friends to ride with, nothing...I have tried everything..so, i have been trying to find another hobby, I tried art, writing, music..i cant find anything i am good at... I like to write, but i start a story then loose interest fast. Not have enough diligence to play interments...and i cant even draw a stick figure..riding is my life, and i cant do it for the time being..idk what to do???