DR is the upgraded version of DB. It has expansion on Midlife Crisis, Depression and Infidelity....really is more in-depth when you are dealing with the long haul. You can find a lot of that on the board and get help on the board. Just reading your first post, I think you are fine with DB.
You are in THE LAST RESORT technique. Start there. But really recognize when you are getting baby steps, and build on those. Even if others on the board or elsewhere discourage you from really counting a baby step....do the opposite. You really need to know when you are out of the LRT, because this is part of your issue (distance, not paying enough attention).
This means you want to go 'grey' and not 'pitch black'. And that is harder. You have to back off, but still know when to jump in.
Sandi2 knows how to give excellent advice in this regard, you may want to seek her out.