How do you cope with the fact that you were the main reason behind the breakup?

I had a good reason to break up with said person, and if I led them away from our relationship unwillingly, I just know it wasn't meant to be. Sometimes we grow attached and we can't help it, and we lose people. If we lose someone it wasn't meant to be.

This can be a question that one can struggle with long after a break up occurs. Something that one might want to do is really examine themselves, and examine the relationship that they were in. Make a list of all the good and the bad. Look at situations that went wrong and ask "what made them go wrong in the first place"? Sometimes you may not always find the answer, and other times you may not want to see the answer that lies in front of you. Sometimes you got to realize that you may need to change some things in order to have better relationships in the future. Also, there are times that maybe it was nobody's fault, and you just have to accept that things just end because people grow apart. If its something that one has a very difficult time accepting or coping with, then counseling might be needed to get you through the situations that you are feeling.

The main reason of a breakup usually has many other little reasons behind it. There is never only your fault. Try to identify what led to this main issue and if you could have really done anything differently. But keep in mind that all we are doing differently has a reaction/an effect. No matter how much we try to do better, the other person(s) needs to also try to have a different reaction than before.

At first I would probably feel devastated, cry for a couple of days and stuff, but later I believe I should live my life and not give up. If I wasn't right for one person, I could be perfect for another one.

Forgive yourself and accept the breakup. What is done is done, just learn form the mistakes and make your next relationship count.

What is done is done. Don't do it again. We are humans, we make mistakes, we learn from it and evolve with time.

I think over in my head what happened and try to reason with the other party and talk to them the reasons behind we broke up.