Easier said than done, you'll get over her in time. How you feel right now is perfectly normal, so you should just be patient with yourself. You should try working out, hanging with supportive friends, or doing something that relaxes you like art or music in order to get your mind off of the painful breakup.
I can't tell you exactly when you'll feel better or when you'll be able to move on, but you eventually will, promise!
It's hard and those feelings will never Truly go away... They will just be covered up by other experiences in your life. If you want to get her off your mind then find some things to do to keep you busy, go out with friends just don't stay in your room thinking about her and get back out there. It's hard me and my gf recently split due to jealousy issues and arguing well it's kinda like a time out I think but im not going to give up because it's stupid and we were meant to be together.
If you she won't talk to you or take you back don't dwell on it at the end of the day think of it as being her fault.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.