I'm going to point back to a post I made last year about another developer's suicide. I'm sure now, like then, many friends and family are having trouble understanding the tragedy and are perhaps asking themselves what they might have done to prevent it. I hope this helps.
I'm grateful to Raph for sharing a bit of his history with Jeff. To be honest, I rarely read Jeff's blog or interacted with him. But now I know that I've thoroughly enjoyed some of his works, such as the Creature Handler class in SWG. I enjoyed SWG more than any other MMO, and I spent the vast majority of my time playing with Jeff's handiwork.