its just what was on my mind at the time

So I'm a high school student.. I'm in grad 12, I've never failed a class yet.. , but yet I'm deciding to say an extra year. I'm not need at home, i feel that I'm ready to go, but their's something making me stay.. and I don't really know. What I do know is that all my good friends will be gone, doing what they want to do and I'm going to be stuck where I am..