How can I move on from a past love?

That is a very good question that a lot of people struggle with.  Marriage is hard and getting a divorce is also hard. It sounds like this is a divorce that you did not want. We all make mistakes in relationships. You want to look back at the relationship. Remember what the issues were in the marriage. Ask yourself why did I do the things that I did and how can I learn from them. 

Every relationships has its issues. None of us are perfect partners. It sounds like you are disappointed by your own actions. Do not be too hard on yourself. There was a reason you did what you did.  Ask yourself what would I tell a friend in this situation. I bet it is kinder than what you tell yourself. 

It is hard when we still love someone. It is okay to grieve the relationship. You may feel sad, angry, confused, lonely and maybe relieved at times. It sound like the relationship is ended so you want to focus on yourself. How are you taking care of yourself? What supports to do you have? Research shows it is best to not talk to your ex, not get updates on social media, and make a list of what was not good in your relationship. You can also list why you love your ex. That may be what you are looking for in the future. You can heal and move on but I know it feels like your world is crumbling. It is not it's just changing. 

Ask yourself why is my whole life surrounded by my ex husband. Is it the surrounds, decorations, your house? If so make some changes. Do things for yourself. Exercise, start  a new hobby, do something that you have been putting off. With grief and end of a relationship it is often good to journal. Pen to paper helps with our emotions. Do not judge yourself for what you write. You do not have to keep it. You can tear it up or burn it if you like. You want to get your feelings out of your body. 

In time you will feel better, I am sorry you are in this situation. Talking to a therapist further would benefit you as it is another release of emotions. Also might help you set some goals and learn to be the best version of you.