Really missing someone right now to the point of crying ?

I was in the same situation last year, i almost gone so mad about my shyness that i was beating my head to the wall lol, but seriously, its been 1 year since then and i still have feelings about a girl... But ive recovered alot since then, ive helped myself to have hatred of the girl, there is no other way i think but if you make yourself hate her you will forget her, but i guess its just me everyone has their own way to make someone forget, though it is truly a hard thing.