help about an acting career

hi
im 14 and i really want to make my dream come true, its to become an actress and meet all of my favourite actors and actresses only because watching them has inspired me to become an actress and plan to save up and go to the AADA when im 18 but im not sure what else i can do if i dont get in. like ive heard about people getting agents and getting a career that way but i would really like to know whats the best way to become an actress i do some comunity plays but i'd like to plan where im going and what im gonna do since i didnt know what i wanted to be when i was older, i thought nothing really appeals to me then i thought i like acting then i thought when your an actor/actress you can be anything. i'd just like to know whats the best way to become an actress since its the only thing i want to be if you could help me out i'd be really greatful