You are a strong person, don't forget it! You made it through the initial MLC. It was hard work! This will be hard for you too.
After the inital shock in my sitch, I had to regroup and figure out what to do. Mind you, I never wanted a D and still don't but it is something I have to do for me. I am so done with all the insanity of the sitch. I needed peace and happiness for me. My daughter is ajusting so much better this time because her mother hasn't gone insane. I am actually keeping it together. Oh, I have bad days but the good are outnumbering the bad now. I am in control of my life now.
Give you H the space he needs but don't let him abuse the sitch either. Do what you need to do for you. You know the drill.
BTW, I too felt like I was a failure, but you know what I am the real winner. I know that I gave my M everything I could have aand I am now at peace with myself.