need help leaving

I am in a very unhealthy, toxic relationship. I have been for 6.5 years this month. We have two children.

He has been physically abusive, mentally abusive, is an alcoholic, makes me feel worthless. He has cheated. He's terrible with our money and putting me in debt.

Meeting him you'd never guess. He has a very reputable job, he is good looking, strong and his smile makes everyone feel secure.

He is a great father when he's around the kids but between work, the gym, and him doing his own thing it isn't often.

I keep trying to end it but it's so hard. He acts like nothing happened and the things he says and has done didn't happen.

I try telling him how he makes me feel and he makes me seem crazy.

He's in my life forever because of the children. My life is hell now but but I know he'll make it even harder if I finally leave for good.

I just need support and words of encouragement.