My therapist has talked about this, he says the two things that always come up in abuse cases are, shame and rage, usually shame, then further along in recovery the rage comes up. I am struggling with shame myself, so unfortunately I don't have much advice to help. BUt as Mike said, it is not your shame to carry, it is that of the people who abused you, I know it's easier said than believed, but in time the shame must diminish and then we can believe it is not our shame.
Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it. Impossible in not a declaration, it's a dare.