Right now, today, schedule time away from your kids for this week. You may not think you should leave them with a babysitter. Yes you should. You must have a break. So, right now, figure out how to be away from them for a few hours this week (one night, during a weekend day next week?). Then do it every single week. With or without your husband. Do not feel guilty. Do not feel bad explaining to your husband why. Just do it to remember how good life can be for even a couple of hours. (exercise? reading in bed? a glass of wine with a girlfriend? yoga? what is it you want/can do this week?)
It will get better. And you will like your kids again. And its OK you don't now.