It has been three years and I worry I will never move on.

My exwife and I split three years ago, and our anniversary is coming up here in about a week. She is getting married soon and I have yet to have a successful relationship since we signed the papers. I don't know how to move on. I don't know if I have the strength to move on. I just know that I am about to struggle because I can't heal from the pain she caused me. Is there any hope that it might get better?