How to stop feeling regret after an episode?

Hi Reddit,

My mental health this month has sunk since I have been dealing with so much car stress. Saturday I reached a breaking point after a fight where he exclaimed that I was driving on the grass. It was nighttime so my anxiety was already heightened, which caused a fight between us. It was a screaming match which had never happened in our two-year relationship. Well, to cut the story short, I was in my car for some space and I called my boyfriend to take me to the mental hospital or drive with me to the hospital and he'll drive my car back so he could use it since his in the shop cause I feeling so much intense emotion. I felt I needed help, he took my keys away cause I have said in the past that I never go back to a mental hospital.

But I broke down getting intense anger, screaming, begging, for help. Slamming my fist on my steering wheel. My boyfriend helped me through the breakdown. And I have since apologized yesterday and today but I since feel the worst anxiety and regret for all the things I put him through. I would love to get advice on how other people relieve the feeling of huge regret after a breakdown. My boyfriend is okay and has since accepted my apology but I can't still feel the regret of my actions. Please give me advice :)