I keep on making the mistake of throwing away what I've got and starting over because I've learned how to do things better. I've just made this mistake again, but it's better because I've learned how to do it better this time, honest.
My response to this.
Don't write the retrospective bragging about what you've learned until after you have demonstrated success in a measurable way. I've encountered the described failure mode in other people, and unwarranted optimism about recent improvement is part of the pattern, not a sign of actual progress.
(Let me throw out a long shot because it is easy to investigate, and if true would potentially let your life be changed for the better. The person that I am most specifically thinking of that fit this pattern later turned out to be manic depressive. This article describes specific events that could fit as well. So..unlikely, but with a big enough potential payoff that it is worth a visit to a competent psychiatrist.)