I have had the exact same struggles as you. It is hard to believe that I (you / we) would put up with that behaviour. That somehow it's my fault, or I'm over reacting, or being over sensitive (he would have me believe that in an instant). What I have found immensely helpful is keeping a diary. 2 diaries actually. One, a daily diary writing down comments he's made, or things he's done, and how it's made me feel. And then I keep another diary for things he's done in the past, and how he made me feel.
I appreciate you are still with him so it might be hard to do this privately. Perhaps you could write it while you have a bath or while you're at work? Or you could keep a record of it on here? I did this too and the feedback I got was amazingly helpful.
Do you have a plan of leaving?
My ex has gone through it all. Anger- blaming me, calling me all the names under the sun. Denial - completely ignoring what I am saying, refusing to believe it's over. He's threatened suicide. He's told me our son will hate me. He blames everyone but himself. My upbringing (he had the cheek to blame my mum. The woman who put him up in her home for a pittance rent for many years!!, he blames the "trolls" on here.
Then he's tried being Mr nice guy, tried to hoover me back in. Then he's been the victim, he's very good at this one. Then back to nasty. He's so obviously trying to get to me through our son. It's really sad to witness.
But his words no longer have this huge effect on me. I do not ever reply to anything if it doesn't concern contact. As much as I want to retort or answer to his insults or tell him he's wrong, I hold myself back. It's a pointless exercise. And it makes me feel powerful!!! You should try it sometime.
I realised it was the end when he went away for the weekend. I was so happy he was out of the house. When I heard his key in the door my anxiety returned.
You need to work on your confidence, and by the sounds of things you won't be able to do it until he's out of your life. Since he's gone, I've joined the gym, got my provisional driving licence, I've started drawing again, I'm writing again too. I feel confident again. You will too, believe me if I can do it, so can you.
Congrats to your mother in law! But please don't let her situation stop you from doing your own thing. This relationship is damaging you and your daughter. You must remember that. It's YOU living your life, not anyone else. And you might be surprised by people's reactions when you do leave. A lot of people can already see what's going on, what he's really like.
My son is nearly 3. He's great. He's a happy, funny little boy. He needs extra cuddles at bedtime recently but that's the only thing I've noticed different. The house is calm and happy now. No arguing or bad vibes anymore, and it's a much nicer place for him growing up.
Got to go, he's up and about, and wants to play cars !