As I see it, most of us never want to admit we screwed up. Especially when it comes to relationships.
We always want to be able to point the finger at the other person. In our minds, it was their fault things didn’t work out.
On some occasions we would be correct. However, not in most of them.
Part of the problem some of us face, is we no longer fully trust the situation. Past aggressions against us makes us a little skittish.
For instance, if your past relationship was with someone controlling and/or abusive. You may tend to keep you next friend at arms length. All in the name of self preservation.
I personally have adopted the “hope for the best, and prepare for the worst attitude”. This can work against me if I am not too careful.
The heart and the mind are connected. In preparing my heart for it’s next big disappointment, (which may never come) I could be creating a self-destruct mode.
My relationship could be sabotaged by my own attitude.