I am going through the same thing. My relationship broke up 16 months ago but the pain is still unbearable sometimes. Here are my top of mind thoughts that might help you.
**Remember that Happiness WILL happen again in the future.
**Call a friend or family member who loves you
**Working on making yourself happy and no one else
**Put your pain in the "passenger seat", not the "Driver seat". Focus on the present moment and try to move through your day minute by minute or hour by hour. Don't let the pain take over and drive you off a cliff.

HTH