Forgive me for being a nonbeliever

I've not read it, but I think I understand the idea behind it. What I don't get is how 'the Universe' is then responsible for any good/bad thing that you receive, because you've been thinking about it....I mean, and just as an example, certainly not picking on anyone, but Leesa - you said being bigger wasn't an option for you, and so you applied these principles and lost weight easily. Is that ALL you did - think about it, put it out there? Or did you work your butt off exercising and eating right?

Basically I think that putting what you want into the forefront of your mind is going to cause YOU to be constantly doing things with that goal in mind, and therefore YOU will achieve it. And by the same token, if you constantly doubt yourself and your abilities, well, you're not going to succeed, are you!

Maybe I'm just cynical though. I'm not trying to stir up an argument or anything, this has been bugging me since it all started