but I feel pretty strongly that some of the DB techniques will make him feel rejected and unwanted
I agree with you from the bottom of my heart.
It take a huge leap of faith. And then you realize that this "stuff" isn't just created for an audience. It's made up of wonderful people who have been there, done that.
I've just this morning started doing something that I just knew was against every fiber of my being. And made it through the day. And thought about it. And ruminated. And finally saw that it was the right thing to do.
That doesn't mean blindly following the "plan". Just give it a little time. Have patience. See if it works. Take that leap of faith.