I don't know you, but I feel the need to talk to you as a friend.
I won't pretend to know that I understand whatever you are going through. Based on the limited information that I have (and rightly so), it sounds like you have had a rough go of it. Divorce sucks. Unhappy relationships suck, whether or not they end in divorce. When that part of your life is going wrong, it's hard for anything else to go right. I'm so sorry that you are going through this.
Whatever it was that "broke the camel's back," good for you for taking the courageous step you took. People may like it or not, agree with it or not...either way it ultimately doesn't matter. What matters is that you do what you need to get through this tough time and remain in one piece litterally and figuratively. If you don't do that, you can't be the best Andy you can be for the people around you.
I'm guessing this was a tough decision for you. Don't look back. There is nothing new there. Look forward. Learn from mistakes, but pick up the pieces of who you are. Be honest with yourself and everyone else who really matters. Be kind to yourself. Lean on those around you whom you trust. Let them support you. It takes a village, not just to raise a child but to nurture an adult as well.
I wish you nothing but healing thoughts. Work hard at it and tomorrow will be a better day.