Quite frankly, you make me sick. Get yourself and your kids off your lazy self-important butts and get jobs!! So your husband has a mistress...deal with it. Dealing with it isn't sitting there eating bon bons and doing nothing. Dealing with it is getting on with your life and making something of yourself. Right now, you're teaching those lazy kids, who probably party as much as they go to school, that they don't have to work for what they want in this life.
Don't sit there and whine about how hard you have it when there are people like me who raised 2 kids with no high school education and essentially no help from their father. Not only did I manage, I even managed to own a house and a car with no help from anyone else. Now, my oldest, who is 19, is not only a full-time student, she lives on her own and pays her own rent and utilities. Yes, I help her pay tuition, but she has to pay for everything else. Not only is she going to school, she works and she volunteers many hours with her church. You want to know why???? I'll tell you either way. She does this because she was raised to know that nothing is worth having if you didn't earn it and isn't a lazy bum.
Your excuses, frankly suck. Deal with reality.
Oh...and fyi..she's a nursing student..