The guilt is unbearable and I don't think it will ever leave me.
You’ve got absolutely nothing to feel guilty about. It’s the Borg that are guilty – BIG TIME.
I know how you feel, though. I had stomach cramps every day for the first week. Then, about two weeks after that, when I thought I was over it, they came back for a day or so. Now, I feel great, happy and free.
The point is, I was angry at myself for even feeling that way. Read my lips: WE DON’T OWE THE WATCHTOWER
Take each day as it comes (I know, an old cliché but true) and live your life like you want to be a friend to the world. Enjoy nature, meet with like-minded friends, chat away till midnight. You’ll soon be really free so make the most of it.
And as for those you "brought into the Borg", nonsense! Each of us would have been shown the WT teachings at our study, but it was our OWN decision to accept it. Similarly, it is up to each individual to check and double check the facts now. You've done that. Congratulations on having the guts and admitting that you were previously wrong. That says a heck of a lot about your character - and you may be pleasantly surprised. Those that came into the Borg with your "help" are bound to want to know why you left - which may lead them to look at the real truth!
Hang in there, Rebel. You're doing fine.