Even though it seems pretty much everyone who knows my sitch on these boards thinks I'm better off without him, I wish *desperately* I'd stuck with LRT and did what you did. Would do it with success for at first a day.. then break it. Either with a nice letter like yours or worse, a mean one because I would online snoop and find stuff out that was bbbbbaaad.
You're right, your letter is not DB or LRT at all, but it is very powerful.
The only thing you really can do, is start at the beginning again. What's done is done. You backslid, but it's over. Let it propel you forward.