If you’re practicing the technique on something bigger, this exercise may be tricky, but use your imagination. If you’re trying to lose weight, go out and buy an outfit that fits the size you’re aiming for. If you want a new car, go to a dealership and shop around. If you’re aiming for something as big as complete financial freedom, start planning what you’re going to do with all that free time and money.

There was an inherent truth on this knowledge, unfortunately not everyone who claims to know or understand this truth really does. An based on your original post you investigated in the wrong places. These sources you mentioned were just means to get this current going but they are not definitely the absolute source of truth. Investigate a bit further and try to understand when you find it with an open mind.

When Does Law Of Attraction Not Work

You claim that "positive thoughts always resulting in positive things" is not the basis of the LOA. In part you are correct. The foundational basis in science, as I alluded to in the article was that thought stuff particles travel through ether (not air) and interact with formless stuff to create whatever it is that you are thinking about. This was how "the law" started. 

How To Manifest What I Desire