I think it is very possible to learn to express one's emotions in a healthy way that doesn't harm others. Before I went to therapy, I was not good at expressing emotions or even knowing I had them. Now I can do this so much better. Phew! Luckily, I don't have dysregulation to contend with. I do relate, though, to what you have described as first working in therapy on one problem, and then having to work on something quite different as you progressed. It sounds like you thought if you learned to express emotions, that would be it for therapy. Now it turns out you need to work on another problem--the dysregulation. It can be boggling sometimes to experience how many problems to work on just seem to come out of the woodwork when we go to therapy. When I first went to therapy, I went for help with depression and my marrriage. Then we ended up doing trauma work, learning to detect and express feelings, learning to let myself cry, improving relations in my family of origin, then with my own daughter, handling conflict, dealing with the impending death of a parent... The list just goes on. I hope you can hang in there and work on the dysregulation. You've had a big success in therapy in learning to express feelings. Keep going.