If you can't then how can anyone else?

If you can't get over it then it will never be over. You can't get over it if you keep it fresh on your mind. That only makes you relive it over and over again. You let it beat you down over and over again. It only happened once and that was enough. Why would you keep putting yourself through it over and over again? Accept it for what it is and learn from it then JUST FLUSH IT out of your mind. Sure it may pop up in your mind again and again but as long as you JUST FLUSH IT as it comes it can't hurt you again and again. You had no choice the first time it hurt you but it is your choice whether you let it hurt you again and again. You can't move forward if you don't learn how to JUST FLUSH IT so it can't hold you back.