I would describe myself as having a fearful-avoidant or disorganized attachment, and even though I've worked on it, I can't seem to overcome it. I've made some progress, but when push comes to shove I have a fight or flight reaction. It truly is that fundamental to my feelings of safety (shout out to my parents for being completely unreliable when I was young 🤦‍♀️)

Someone who is dismissive avoidant is going to have an even more difficult time.

All this is to say, you did the right thing by ending it. Being avoidant is so fully a piece of who we are, I'm not convinced it can be changed.