and what happens now? where am I going to?

I am going trough one of my identity crisis right now... now and then they like to come upon me and as closer the end of my school time comes as more frequently they take over my mind and the question appears: what happens now? where am I going to?
from my early childhood I have been seen as quite bright child.. while being in the kinder-garden I also went to folk-dance classes and the people there said that I had quite the feeling of rithm I graduated kinder-garden a year early and went straight to school.. during the 1st grade I also went to art classes and there as well maybe not the best but more better than worse I was.. after 1st grade I moved to another town and a half year of 2nd grade I spent in just an ordinary school doing nothing but learning but as the new semester came a new school for ma came as well.. bow this was not just an ordinary school but an art school as well which I graduated and 9th was the last grade there... during that time in the class as well as in whole school I was seen as the "smart kid"... over thous years for some period I also went to folk-dance again as well as basketball, karate and handball classes which all I dropped after a year... after the graduation of my primary school I had to find myself a high school to go to so I got into a school with higher lever of education than most of the ordinary school [I am in this school right now too] and here I am in a special biology/chemestry class where once again I am seen as "the smart one".... in the high school period I started to write a bit and I enjoy doing that and maybe I am even not that bad at it.... this year I got an acoustic guitar for my birthday so I am playing that as well..... this is getting kinda long so I'll just try to put it all together...
I have danced, graduated art school, I am playing guitar, I write, I am quite good at biology, till 9th grade I was really good at math but now when I have a new teacher [don't get me wrong she is really nice and lovely person but for me she's too soft] I have let me level in math slide down a bit, I enjoy physics but as in this subject I have only had well lets just say not the best teachers I haven't got into the themes we learn in class as well as I could have, I had a chance to do an research work in biology this year which might have got me place in university but instead I choose to do it in culturology and write about my passion - metal music....
right now I realise that I have done quite a bunch of many different things but I am always somewhere in the middle of it all.. I have no speciality... I have no such thing to which I could say "this is my thing this is my place" I am ever so afraid that this could be too late that somewhere in the middle I've lost my path and I could end up as the sales lady in some shop [not that I see that as bad profession I am ever so grateful to the ones doing it but is it really for me?]... now I am just ever so afraid and........... of I am such a mess... now even talking about my private life.. mess.... mess... mess..... nothing but a mess.... without a purpose.... maybe I just wasn't ment for anything..... all is lost