Breakups are devastating and terrible, mostly to the ones who invested much of their emotion ,effort and time. Some people may resort to self destruction after a breakup.
Use your breakup as a tool to build you up by focusing on the things to do below.
1. Avoid being alone as much as possible.
2. Stop stalking your ex (and the third party, if there was).
A painful separation will be more acidic and painful if you keeping seeing your ex. Seeing them makes you dwell on grudge, cutting down on your positivity.
3. Spend more time outdoor and engage in fun physical activities.