Is it normal to feel this helpless with life??

Hi,

I'm 18 (i don't know if that really matters to you or not) but, i'm feeling very strange at the moment, and wondered if you could shed some light into it.
I feel, currently, like i'm this big, famous, music star, and no-ones giving me the attention i deserve, and like, i've done it all, i've had all the money from music, toured everywhere, and now, i feel i've done everything in my life...i feel theres nothing more to do. Some days, i'll wake up, and be too scared to go outside, fearing i'll end up in an accident on the road or something, or get knocked over by a car. I sometimes brace myself throughout the day for a freak accident to happen, like, i'll have this feeling in my stomuch that ANY minute now, i will die. (Im sorry to be bombarding you with so much of this information by the way) Um...and other days (This is particually bad), i'll be about my day, then, suddely stop in the street, and look around, at all the cars, everyone walking around, and be genuinely petrified that i'm a human being, that, i'm actually a human, and not for example, a cat, or a bird. I feel its a huge responsibility! I am daunted by the fact im a human!

Anyway,

Thanks very much for taking the time to read out,

I hope to hear from your replies soon.