Ok, so what you are looking for is a magic pill/bullet to make his abuse tolerable?
Thing is, his abuse of you will only ever worsen, so if by some miracle we handed you a way to make this work today, by next week he would have modified his behaviour to MAKE SURE YOU SUFFER.
the faster you become impervious to his cruelty, the faster he will escalate. and he will escalate.
Every single one of us that have been where you have been also wanted the potion to make it 'OK'. That Magical Elixir doesn't exist. You can't COPE with abuse. You can't medicate it, you can't counsel against it, you can't just carry on regardless. It doesn't work like that.
You are asking for help to survive it. OK, but to survive you have to come out the other side. Only when you can see what he has done to you, and what he will do to your DC, how shrivelled your life will be, how great your fear will you (hopefully) try to get out. The longer you stay in this, the harder you will have to work to regain normal.
What a relationship like this does is to kill you slowly. Death by a million tiny cuts. When you are past the point of caring, you will watch him do the same to your DC, and then when they are grown, you may get the chance to see that THEY are in abusive/destructive relationships, cos that is ALL THEY KNOW.
Break the chain, understand that to win the war, you must remove yourself from this field of battle. You will win, you can't lose, freedom ALWAYS beats oppression.
You will understand what we are saying one day, and you will appreciate that we are trying out hardest to help you to a happier, safer, healthier place for you all.