I used to do a lot of work helping people to stop smoking. There are only 2 reasons people don’t stop smoking. One, because they don’t want to (often this is subconscious) Two, because they don’t believe it’s possible. Or they assume it will be incredibly difficult and painful, and they can’t do it without suffering forever. (Again, this is often subconscious and it is a flawed assumption).
The results of using the Law of Attraction techniques are only limited by your imagination (and by the laws of physics, you’re not going to manifest bird-like flying anytime soon). There are endless things you can attract in your life. From practical things — like “good parking karma” to always guarantee you a great parking spot, to “calls to adventure” that open you up to random invitations to explore the world — you can use the principles behind the Law of Attraction in any way you please.
I had a clear vision of what happy looked like and since it wasn’t my reality, I didn’t allow myself to be happy. So I was angry, resentful, and jealous of all the people around me who were getting their dreams handed to them. And of course that flipped my magnet and the only thing I attracted was more negativity, sinking deeper and deeper in my own shit until I hit rock bottom.
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