Getting over your ex

What are some tips to get over your ex? We've been dating for almost a year (Jan 31st would've been a year) and we recently broke up on my terms because I felt it was right. We'd constantly argue and lately he didn't seem to care. He'd go hours or even days without talking/seeing me and it upset me. I felt like I wasn't important anymore. When I'd tell him about how he treats me and makes me feel he just gets really mad and plays victim. He doesn't take responsibility for his actions. All of my friends say he was toxic because of the things he did (He hated them and wanted to take me away from them, always played victim, didnt want me hanging out with certain people and would get beyond pissed if i did. He'd always want to have sex and get mad if i didnt want to) Anyways, I know its for the best and everyone says it is but I'll still not over him. I'm still upset about our break up but he seems perfectly fine. Like i know im young (17) but we was my first real relationship. The first guy i had sex with. I see him everyday at school and it just kills my mood and makes me sad. I want to get over him but i dont know how to.