I would first ask for a scientific study on this instead of relying on claims in a book. Confirmation bias is likely at play here. It's common for people who have had success to widely report their story. Others won't be so vocal about it when it does not work. Even if they are, it doesn't make an interesting story for people who want it to be true to relay the story of failures.
So to wrap this up, there's just not enough to go on. How could I give this any level of confidence?
So to wrap this up, there's just not enough to go on. How could I give this any level of confidence?
