Help me!! I am stressed about my future!!?

Okay so I am super stressed, I am a very neurotic person, and can't leave things alone til they are planned. Okay so this week has been very confusing, I have always wanted to be in Opera, I love it, I take vocal lessons, I play the piano, guitar, and clarinet. I speak German with great diction, French not so great, Italian pretty well. I am also trying to learn Swedish, Dutch, and Russian. I have dancing Ballet and Ballroom for four years. I am so confused though cause recently I have been thinking of considering being a dancer.... I also am confused cause I'm forcing myself to learn all these languages and I enjoy it, but I get so upset, and worry I might not become fluent. I am 16, I need to stop being a neurotic stress wart, and go with the flow and what happens will happen, and I need to learn that life is not planned. I plan for everything!! I hate it!!!!