Develop self-confidence.[10] The most glaring risk in pursuing your dreams is that you'll lose focus halfway through and give up. The most direct way to circumvent this is by developing a strong sense of self-confidence. With self-confidence, you'll be able to depend on yourself when the going gets tough. Of course, self-confidence is something that takes a lot more than words to truly feel. Though easier said than done, there are lots of exercises you can do to boost your sense of self-worth.
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