I had to look within and ask myself why? What was I hoping to accomplish by accepting unacceptable behavior - again?!
In my case, I believe it was ego.
I wanted to believe I could handle myself better next time. Put those boundaries in place and take action was my thinking. I became aware, accepted the truth and took a healthy step away.
Then I tried a relationship with a new guy.
Lots of control issues with him.
Again, my ego tried to tell my sane self that we could handle ourselves in this situation, too. Had to check myself before I wrecked myself once again.
I'm getting better at recognizing my ego's willingness to accept an unhealthy challenge in some relationships. This awareness gives me the power to accept: I don't need to prove myself in challenging personal relationships anymore.
Today, I prefer less challenge in my personal relationships.