I think I've hit on an approach that is getting me somewhere.
I've been writing a story about myself -- an alternate childhood, starting back when I was eleven. I started off imagining that I went beyond thinking about suicide and actually tried it, but survived, and that instead of being sent back home to be condemned for yet another high crime, I am put into a supportive environment (a theraputic boarding school, and yes, there are such places.) I go on to imagine that my 11-year-old self gets what he needs, that the adults (and even the other children) try to make his life something he can succeed at, that he gets as much love and support and attention as he needs. I think it's going to be a slow process. It's a combination of figuring things out (like when writing any kind of story) and letting my subconscious lead me. I get to a scene, spend a few hours or days waiting for something that feels right to seep out of my unconscious, then write a little bit. I spend a lot of time rereading what I have written and experiencing the feelings that it evokes.
I'm not really any closer to remembering what it was like, let alone reliving it. I may have sealed away the memories so well that I will never be able to retrieve them. What I'm hoping is that by telling that 11-year-old that still lives inside of me (like the child in "The Ones Who Walk Away from Omelas") a story in which he gets what he needs, things he never knew he needed but whose absence he suffered from, he will begin to heal. Maybe he'll be able to put the past to rest. It sounds silly when I say it -- how can something that exists only in my imagination banish events from the real world? But then, that 11-year-old exists only in my mind, too. And the events themselves only live on in my memory and in what they did to my inner self. A virtual better life for a virtual self.
So I'm hoping. Maybe someday the dead child inside me will come back to life. Maybe someday I'll be able to cry again.