I am just now starting to write my story too. I know what you mean about not knowing if it's helping. In some ways it seems to be counterproductive, in that it is dragging up old memories I thoughtI had put to bed long ago. I guess I hadn't...

Keep plugging along as they say.
"Our prime purpose in this life is to help others. And if you can't help them, at least don't hurt them." -Daliai Lama