I purchased the Sedona Method course more than a year ago. It's one of the best purchases I have done. The course in itself is almost designed to put on your headphones and let go. It's very easy, and the results are very powerful. Of course, this course as well as many others, require that you learn the method. The more you use it, the easier it gets to release.
I have used the Sedona Method along with paraliminals (more precisely, the Ideal Mindset course). It does not interfere with other LSC programs, all to the contrary, it reinforces any of their effects.
It is very helpful on facing challenging situations, especially emotionally highly charged situations. I managed to put behind me a depresion that came as a result of a personal situation. By using the New History Generator paraliminal and Sedona I managed to put it behind me in a couple of days.
About changing your beliefs, I found that Sedona didn't change them significatively. And I still can use it without believing all what Hale Dowskin tells.
I hope this helps.