As I first mentioned, these ideas have come and gone many times over the years. Like other similar ideas, they have a lousy track record, but someone always seems to find a new way to dress them up and put them out there to fool the next generation. The truth exists, but you won't find it there. I know because I've been there.
No, actually, the record is quite good. Using these principels consistently and with faith produces results. But it only works if you work it.