Venus,
It was 7 years for me but it wasn't wasted time.......I did plenty of living in that time, and the bad things about the relationship taught me a priceless lesson about what I'm willing to put up with from here on out.
There's really no other way to learn it than by going through it and surviving with your head high. You'll be smarter and more self-protective from here on out.
So it's not wasted time.
Can you avoid his petty angry attacks at all? Can you just not be there when he's there? Is there anything you can do to accelerate the process? This is a torment you shouldn't allow to drag out if it's playing such hell with your peace of mind. That's worth something....you know?
Hang in there. You don't have to be zenlike...you just have to get through it somehow, and then things will be much, much better.