I've gone through many of these trendy personal training or New Age stuff. Been through Asiaworks, The Secret and eventually, the ultimate truth - A New Earth by Eckhart Tolle.
Of all these, Eckhart Tolle's teachings is the only one I find useful.
I mean, I tested The Secret by visualising getting a bag of stolen drug money in Thailand and after three days of extremely enjoyable holidaying, no bag of stolen drug money.
Asiaworks is great but the problem is how everything devolves into zealotry. Eckhart Tolle is the only one that is constantly useful, especially when facing extremely stressful situations. Especially when I encounter people who try to disprove these personal training or New Age stuff.
It's always there. People who go and try to prove that anything you care about, be it your religion, beliefs, superstitions, favourite music, films or anything in particular.
Tolle said it's like the situation when somebody says, "My car is big. I have a big car."
Another person might say, "My uncle's car is bigger." It doesn't matter if it's his uncle's or his teacher's or his sister's. The point is, by making someone less, then they believe they become bigger. This, is the ego. Trying to be bigger, as always.
The feeling to push others, even at least mentally, to be smaller, to show the faults and flaws in someone's beliefs or arguments or whatever, can either be totally emotionless and egoless (admittedly quite rare) or more commonly, driven by emotion and a sense of being more.
And at the end of it all, at the core of everything, there is no more or less when it comes to the self.