The good thing is that our minds have neuroplasticity which means we can learn new skills & learn how to function & face the difficulties in life. It takes finding good help that can teach these skills& lots of practice breaking old habits but I have found that even at the age of 54 (11 years ago) when I left my H & moved 2100 miles away & got into good therapy & ended up surrounding myself by very functional friends (something I never had before) I was totally able to learn & change. I have never been happier in my whole life nir feel more peace. It is my whole environment that has made the difference but it is awesome to know that I wasn't sentenced to a life of misery because of all I went through during those previous 54 years if my life.
There is hope.
I had an awesome DBT group leader & she is my private psycholigist now that I see once a month while going through all the legal stuff around my divorce & the settlement of marriage assets in the state I left. She helps me remember the skills I learned & validates that I am handling things very well & gives me helpful input.