Anyway, I am not unfamiliar with testimony. It was a huge part of the meetings in the Christian Church. And I knew people there who had changed, radically at that, presumably through the Power of the LORD. Changed they certainly were.
But there are all kinds of self-help stuff circulating, from diets and exercise programs to meditation and yoga, tantra and shamanism. Given the brisk sales of these many different approaches, I would expect myself to walk the world surrounded by demigods and heroes. But the opposite mostly seems to be the case. One can only rejoice when someone washes their hands after heavy-duty toilet use. Happiness, gratitude, compassion, healthy lifestyle changes and creativity that is not directed at swindlig people... more common than hen's teeth, but not by much. Perhaps I am just a misanthropologist.
So dear reader, have YOU seen anyone (except yourself! anyone else) actually changed by any kind of transformative practice, whether physical or spiritual? Anything from diets to synagogues. (Not life phases like college, marriage, parenthood etc.) You don't need to give names, I shall not interview them - I will take your word for it.