no need to be a composer/performer...?

I don't need to be a composer/performer now. I am only 21 years old. It just doesn't feel right. I feel like I should keep on prepping these next 5+ years and then really show my skills and create. That's how it feels. I think in that time frame I will feel much better about doing those things, but really I have no clue how I will feel. But at age 21 I can't really imagine myself being at my best at all.