I agree with your premise. We really don't need any more self-help articles or books. Most of us know what we need to do to achieve our goals, dreams, or overcome addictions.
However, the self-help advice can serve as reminders. Sometimes, when you're stuck in a rut, it's nice for someone to remind you of the basics, so I'll indulge in the self-help realm, once-in-a-while.
Overall, I thought you made some excellent points about self-sabotage, and I thought your story was well-written. Thank you for sharing!