Hey, TonyS, really sorry to hear about your situation. Mine is a bit different but I will echo what Steve85 said above - GAL GAL GAL and do it for yourself. I can't tell you how much better I feel after having reconnected with old friends, made new ones, and taken on some new hobbies since joining this board. I spent so much time in my head wondering what W would think, how I can show her that I'm a good person worthy of her love and affection, and how that got us nowhere. I'm still in the thick of my sitch so I can't tell you how it ends but I can say that taking all of W's variables out of the equation has really helped me to focus on my daughter and myself, making both of our lives better.
I will also say that setting boundaries is tough because it feels like you are pushing someone away who is already walking away from you, but you will maintain your dignity and gain some respect. If she doesn't respect you then she can't love you, and she can't respect a doormat. So, set boundaries, be assertive (as in, figure out what you want and push for it; don't back down to appease her), GAL, and you will at least see a chance in yourself even if you don't see one in her.
Good luck, brother.
M(35), W(35), D(4) M-9, T-12 Bomb Drop (D announcement) - May 3, 2019 W moved out Aug 13 House sold Sept 25 Papers signed Nov 15 Divorce finalized Dec 12