I won't tell you that the emotional change is easy because it wasn't, not for me. Prior to Shithead (as named by my mother 
) I was waaaay too trusting, way too naive and looking back, I'd say slightly immature.
He changed me. I had become a shadow of myself, and because it takes them time to grind you down, as time passes you become more unsure of yourself, less confident and more inclined to believe the bloody rubbish they spout.
I definitely went through a grief cycle when I was spring cleaning my heart. I was obviously angry with him, but what surprised me was how angry I was with myself.
You will get there. They say it takes a month for every year to get over a relationship...well that's fine and dandy. Just remember "they" weren't in your relationship. You were. Might take you ten minutes, ten weeks, ten months once the ink is dry on the decree absolute. Doesn't matter, what matters is you and your DC come through the tough stuff and then you can look back on this time as a bump in the road.
((Hug))
You probably need one