Skeptoid does an awesome job of debunking this.
I've actually read "the secret", it was given to my girlfriend as a present. I personally think it's absolute tripe, and is pure nonsense.
I'd like to see the evidence to back their claims up - Although, I'll probably have to wait until the end of the world to get it.

R.
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"Extraordinary claims require extraordinary proof." - Marcello Truzzi