I can not give you the correct answer because you will want to do something else when you are big but now I will tell you about my childhood dream.
Actress
I have a dream since childhood and I'm still waiting to meet. When I'm big I want to act. Why? because when you are in the scene you feel it all. You feel in the ninth sky. You have the audience that looks at you and encourages you, you can read in their smile that they appreciate you. When you are on stage, you become someone else than you are. the end is best. When you've made the room stand up and all warm up with your applause.
