Human always tend to understand and most of the times when we don't, we just put it on the side until the moment we do. Understanding the Law of Attraction could be something that would need to experience it. And to experience it, you must apply it without questions or dough.
There's no short cut into this, you need to let yourself experience the Law. Who do you want to be, the one who's studying the Law or the one who's living it. :)
In the last few years, I found out that if you do believe that you are lucky, then you start to notice everything you win. And you start to think that you really are lucky. And you find out that you win even more. Do you feel lucky? When I talk about winning, I'm not talking about casino and that kind of stuff. I'm talking about everyday life. Casinos are made to make money, not giving it away.