What are some good way to shake the depression of an ended relationship?

My ex and I recently parted ways in such an indirect way. Or shall I say I picked up on the "He Just Not That Into Me Anymore" cues and walked. I know with time and patience this pain and hurt shall p, but while I am in the now of it, I feel so deeply hurt by the situation to the point that it affects my mood and entire day. As I attempt to do or think of other things as a way to move forward, I find myself annoyed, angered, and extremely sad all in one moment very easily. I then go through the routines of my day and come home barely eating or eating too much and just laying around. I attempt positive self-uplift, which helps, but after awhile I end up laying around getting totally engrossed in tv to help numb the pain. I've tried getting myself back out there dating, but when I talk to other men I zone out comparing them to my ex and the pain. This process has been happening consistently and it exhausts me and just deepens my depression. Any advice on how to move beyond the pain?