Sunshine,
I take pictures off the wall first, it give me a sense of accomplishment to see the walls bare. I've packed up and left more relationships than I care to count!
I think one thing thats important is, you do not have to prove anything to yourself.
His delusions and "lie deny demand proof" motto, are his ways. Not yours.
You have your proof that he cheated, you have proof that his drinking has negatively impacted your life.
You have proof that you want change. IMO, anger means you want change.
You can do this, I know you can.
Stay strong with a gentle spirit and you'll be fine!