I used it as fuel to make positive changes in my life. Not just breakups, but any time life throws something really awful my way, I try to make an effort to use it as a force good. Breakups, deaths, job loss, etc. Be a better you, quit smoking, get fit, learn a new skill. Things I normally wouldn’t be motivated to follow through, i do.
Sorry you’re going through this. Try to remember that it will get easier in time. Accept it wasn’t meant to be, and know there’s a version of you in the future, looking back at this knowing it was all worth it to find the person right for you.