Phew it worked!
I'm really in need of suggestions of how to help myself to feel better after splitting from my partner of 6 years (2 kids).
Although I initiated the split (only a couple of days ago) and I feel there is no going back, IT HURTS SO F*ING MUCH 
I'm swinging between remembering the good times and feeling in mourning , almost as bad as when family members have died in the past
, and being angry and hating him for what he has done to "us" . Also I'm feeling very sorry about the children not growing up in a family.
The backstory is -
We have always had what I would say "normal" problems, like all couples do - arguments about stuff, but we were generally close. Last year he suffered a couple of setbacks and started to drink more - his friends who by coincidence were unemployed at the time joined him
.
His personality has changed. He is snappy with me, doesn't take my feelings into account at all, and regularly calls me horrible names if I challenge him on anything at all. I kept telling him I would leave if he didn't cut down his drinking and stop the nastiness. He did for a while as he got a new job with long hours so couldn't drink as much and we didn't see each other as much so when we did see each other he would be really nice , taking me for dinner etc.
He still has the job and I though things had been better between us. On Tuesday this week I came in from work an hour earlier than usual and found a big bottle of cider and cans of beer in the bin that had DEFINATELY not been there the night before or that morning. They hadn't been anywhere 'normal' in the house either as I had cleaned house the night before, so they must have been hidden. When he got in from work I took the opportunity to confront him as DCs were at club so they wouldn't hear. Thank God they weren't about because when I challenged him he was sneering at me, shouting , telling me to "Say goodbye to your kids" laughing manically at me "Do you think anyone cares what you think??? hahahaha" "I don't give a fuck about you" . He was definately sober though, as I would smell it and notice in his speech if he has had even 1 or 2. He finally admitted later that night he had hidden the empty drink in the wardrobe the other day when his friend was round as he didn't want me "moaning" at him.
I threw him out there and then. He went to his mums. I don't trust him anymore, I feel so hurt and doubt I could ever forgive him for the things he said.
I took his keys from him (house in my name, his mum's house in his name), but today he called me to ask if I was in as he was coming "for lunch". I said he is not using the place as a hotel. He maintains that he bought the food. So I said he can come and take some of the food "he" bought to his mums but I don't want him around me.
He came and did look ashamed and said "sorry"
I told him I didn't think I could ever forgive him for lying and the things he said.
Then he said "are you still here?"
and called me a "c*nt"
I'm so hurt and although I know I don't want him near me, it's as if I'm still waiting for things to be ok. I was supposed to be going into work today after being off sick because of this for 2 weeks, but I just can't bring myself to go although me boss is really getting annoyed at my flakiness. I just can't seem to get it together to move. 
I was thinking I could write him a letter and drop it at his mums (he has never had a mobile and I don't want to burden his mum with dragging her into it by calling her) explaining how I feel and why I need to leave and it is final. Then I may feel better since he won't "let" me talk to him. Do you think that is a good idea?
Seeing his stuff and the photos of when DCs were babies is even hurting, so I was thinking of asking him to pick his stuff up tomorrow/Mon, but will probably just get a barrage of abuse.
Childcare is sorted as DC's in school and CM 8-6 Mon to Fri and his mum does any extra we need. Also property is easy as we agreed to put the lease of this house in my name as he is the owner of the house his mum lives in - so he goes back ther (big house, only 5 mins away, morgage paid off) and I stay here. It should be so easy - but it's still so bloody hurtful 
Sorry that turned into a complete spilling-of-feelings novel 