Recommended: Professor Richard Wiseman and the Science of Self-Help
Richard Wiseman is a professor of Psychology at University of Hertfordshire who studies and writes about the science of self-help. (He's also an amateur magician, which I very much enjoy.) He has a YouTube channel devoted to the subject ((220) In59seconds - YouTube), and one of his books is explicitly about this topic: https://www.amazon.com/59-Seconds-Think-little-change/dp/1447273370
I *highly* recommend him as one potential source of information to synthesize, if you want to bring science into self-help. π
He has a number of other books on related topics, and he also maintains another YouTube channel that's more about fun facts about psychology in general ((220) Quirkology - YouTube).
(This post is a cross-post from the comments thread in