I don't know what to be when i grow up!!?

hi. im 13 and im soon going into year 9/ ninth grade at high school. we have to choose our GCSE options then i think and i have no clue what i want to do as a job. Im good at a few things but i need to be really good at them to do it as a job. im good at drawing, im a fast runner, i love athletics and im good at anything sporty (except sports that include ), i love writing and i get top marks in english, i love to read, i love really really really love dancing, i really really love to sing and my friends say that i have a brilliant voice, but im too shy and modest, i would love to act in a soap opera. you see, i dont have enough confidence to try out any of these things. i really have no idea what i want to do! please help me!