Good question! It has been proven true time and time again. It really does boil back down to the same in this case really. Nobody really does anything if they do not believe in a potential outcome. Otherwise, there is no real motivation. So believing in yourself, your project, your goals, etc only makes sense. The issue is these "gurus" who take advantage of people by trying to make this far more of a bloated concept that it is, and then using shame and guilt when things do not wind up working out. For example, the lady who passed away from cancer because she ignored modern medicine and was so brainwashed by these "Gurus" that it cost her her life. And rather than these same jerks admitting that they blew smoke up her ass, they would rather blame her for "obviously" not "truly" trusting in the Universe. I find it so horrific. Believing in a sandwich is not going to feed a hungry person who has literally no resources to create the sandwich in the first place. This whole mentality is truly why narcissists and abusers walk away unpunished in the long run as well. The truth is, the Law of Attraction, as it is being marketed, may "work" for a few, but not the many. For every one person that is "did" work for, how many did it not? Believe, achieve, succeed (maybe). Nobody truly needs to sink money into this concept. It's a shame that these snake oil salesmen continue to take advantage of vulnerable people. It truly is.