End of high school

So...our senior year is almost over. Excited? Scared? Nervous? Just don't care?
Whether we want it to be or not it is our last year in high school. (unless u fail...which then you will have another year) College seems like the option we should be looking at. or Military.
Now that its almost over, when u look back now, do you wish you could have done something different? anything at all.