Hi! BrokenSpartan, I am new here too. i jut read your post and felt like I had to reply. I am going through the ending of a relationship too and i can understand how you are feeling I think. I too go from overwhelming sadness to anger to depression. I feel like my emotions are out of control. I made many mistakes to lead my relationship to where it is not too and I spend a lot of time pouring over what I did wrong and how I could have changed before we got here. the only thing that has helped me so far was talking to my psychiatrist. if you don't have one please consider seeing a professional. for me talking to my psychiatrist allowed me to get some control of myself back and while I am still not OK by any means I am so much better than where I was before I talked to her. With the COVID it seems most of it is done over the phone so you don't have to go anywhere. please look into talking to someone professional.