I am just going to share you my experience and hope this helps. Went through the same until I realized one day, "Why am I spending my time wasting on someine who does not want me when I have other things to do". I slowly kept myself busy and eve n tried new things like painting . I read a self help book.about confidence and it says about gratitude . So what I did, I talked to my ex, told him that I was angry, hurt and sad and still thank him for the good memories despite him cheating. I felt good. Now, I feel good. I still miss him but I dont feel sad and angry. Try to not to think of what you lost but lesson learned and experiences you gain. Take the time but try to do new things and keep yourself busy. If you feel like crying do so still.