J.S.
I've been there. It's perfectly normal. A part of your life has closed so it's normal to mourn it. It doesn't matter how bad the marriage was or how much you can't stand him. He was a huge part of your life and you devoted many years to him. It's only natural to feel a sense of loss and go through the steps of grieving. It'll get better with time. Just move on knowing that your divorce was most definitely what was best for all of you. Don't go back and second guess yourself or wonder what you could have done differently. That'll just make it worse. Just look ahead to your new life. Grieve your old life and allow yourself to be sad for a couple of weeks and then move on. It's perfectly natural. Good luck to you and congrats on this new phase in your life!!