Interestingly enough, it is in Mabel Katz's book, The Easiest Way, which was published in 2004, about two years before The Secret came out, that a clear connection between the Ho'oponopono philosophy and the Law of Attraction can be seen. On pages 59-60 of The Easiest Way, Mabel writes clearly that, "Manifesting which we desire requires much trust and confidence. The universe only needs us to take that first step." To Mabel, we must ask without expectation and just have faith and confidence. That's basically the Secret in a nutshell. And Mabel clearly uses it as part of her practice of Ho'oponopono.
Peace of I,