How do you leave an abusive relationship when you have everything to lose

We worked for years to get our dream house , haven't even been in it a year. It's everything I've always wanted. Perfect house, perfect location, the school we wanted for our kids. The amount of time money and hard work, I just can't imagine throwing it all away. I made the mistake of letting him take care of most of the fiances and only working part time so I can be as close as I can get to a sahm but still have some money coming in. I should have never done that because now I don't know how to leave.

How do you leave when the kids are happy , the house is your dream home and everything I've been fighting for and working for is finally here? The only thing is my husband has changed and he had his red flags but over the last year or so things have gotten so much worse. I walk on eggshells every day I have put in countless efforts into the relationship and he has put in no effort. He takes care of the family and tells me that should be enough but he is abusive (not physically) to me and I cry every day. I've tried everything and he just doesn't care.

The problem is if I leave it will uproot my kids lives and ruin everything I wanted my whole life and all these years that we worked hard for. They are so happy here and we would have to sell the house and because of my lack of job experience I would never ever make enough to give them this life even with child support. I'm also scared my husband would seek vengeance and take everything he can and ruin my life and turn my kids on me because that's what he has become.

I'm trying my best to ensure but it's not fair but it will ruin everyone else's life especially the kids. How do you leave in that situation? I have no family support since I help them out and I keep a healthy boundary with them as well because they also don't treat me well. I am completely stuck. I know this man fell out of love with me and I think he's taking it out on me every day but he doesn't want to lose his image so he wants to stay married. He won't discuss options. He just ignores me.