Dealing with Anger and Shame

Had a set back this evening, hot temper poor ways of handling myself in a stressful moment. So embarrassed as I. My teen days I loved myself and was proud of house burst at any frustration. I had gotten a handle on my lashing out from not being able to commute great due to my ADD. But after toxic unhelpful first marriage my self of stern is pretty shot . I don’t loose it with my kids or fur babies but my husband. As he had a tbi and I am doing my best to do it all as a lot of things such as cleaning or cooking become a project but because it mimics past bad experiences sometime bad moments over come me that I find it hard to relax and I am so ashamed I am not as good of a person that I used to be. I am doing therapy, meds but wonder if I have to do a group therapy ?