I went thru a terrible breakup and this is what helped me.. Laughing. Seriously, surround yourself with your
silliest/funniest friends. Watch funny movies, even if you don't feel like it, just do it. Anything to put a smile on your face.
Also, treat yourself. Go get your nails done. Buy some new clothes. Change your hair. Most importantly go to the gym or start working out at home. That last one does miracles. If you already do, then step up your routine.