Take extra time to think before you act.
When someone you love rejects you, it’s easy to get caught up in your emotions and make rash decisions. The pain and confusion from a breakup can cause you to do just about anything to get them back or perhaps even to get revenge on your ex by causing them pain. So, be sure to think twice before:
Posting to social media. Once it’s out there, you can't take it back, even if you delete it later. A day later you might wonder, “What was I thinking?” The fact is you weren’t thinking. You were reacting.
Behaving obsessively, such as driving by your ex’s house repeatedly, calling your them over and over again, or leaving them voicemails, notes, or letters. Later, it's likely you'll look back on actions like these and regret them or feel embarrassed, which can take a toll on your self-esteem. Hold your head high and focus on healing.
Staying in contact with your ex. While it's tempting to "stay friends" with them so that you don't lose them completely, it will slow your healing process, keep the heartbreak wound open, and force you to watch them move on. Focus on your journey for now, not theirs.
There's no real way to "avoid" future heartbreak.
It happens to everyone at some point, and living your life in fear of another broken heart will, in the end, break your heart again. Give yourself time to heal, but then let yourself love again.
Other Things to Remember When You're Heatbroken