That's a nice article on that blog site,
@zclesa, but the truly astonishing one is the CNN article linked from the blog, which recounts much more about the story behind Seidler's recovery from bladder cancer. The article is 12 years old, and according to Wikipedia, Seidler is still around and NOT suffering from cancer at age 86. The CNN article offers some really powerful coverage of self-healing possibilities and some of the physiology involved, with good input from authoritative sources. They also interviewed a serious crtic, with strong credentials, who is entirely scathing about the possibilities, but I don't give a flying you know what about her opinion. (She's only a couple years younger than Seidler and is apparently also still around).
Anyway, he describes spending "hours" on his healing visualizations, and that is not hyperbole - I believe that a self-healing like that requires a huge commitment of time and focus. I knew someone many years ago who I believe healed herself from an inoperable and malignant tumor somewhere in or around her reproductive organs. She went on retreat and devoted herself to the same kind of intense visualization for several weeks. She came back, the docs took another look, and said "huh - it totally shrank, sure, we can take it out now". I believe in her healing, but she was a really self-absorbed individual who was very difficult to be around, and while there was no way for me to know if she was like that before, maybe that's what it takes.