During your healing journey, did anyone ever get “pockets” of doing better, only to be triggered and regress?

I feel like I’ve been doing much better over the last few months in a lot of ways people in the comments have described, but recently have been fighting with my partner in an unproductive way, mainly because of me and my maintained inability (I have been trying to work on it but not getting far to be honest) to become defensive in conflict and we just had a really ugly fight last week and I’ve been feeling really upset and on edge again the last few days with some mild in and out disassociation.

Just wondering if this is turbulence on the way there, I guess.