Leave. Let go. Find happiness within yourself.
I will admit to actually being the one doing the trying, the dealing with crap. I don't regret my decision to end it.
What I was saddened by, was that despite my efforts to hide my unhappiness from my children. I only finally ended it after my daughter told me for her birthday she wanted me to leave her dad. She was 14.
I regret that she saw everything I thought I was hiding. I don't regret leaving, finishing college, and showing a different path to my kids.
Best of luck to you.