Motivation is always appreciated. Good work there, Megan!
I have not read the book but have seen the film/video. The mind is indeed an extremely potent tool. And the mind is a flow of thoughts just as the river is a flow of water. The river can only be defined by the quality of the water. Similarly, the quality & intensity of thoughts would naturally determine the quality of the mind. As every action is necessarily preceded by thought, it is but evident that our thoughts create our reality.
Not sure if you have seen / heard Abraham Hicks [Esther Hicks] videos on Youtube. Do check them out. Very inspiring & gives more clarity on the subject in term of techniques. She has been speaking on the subject for around 20 years before Rhonda Byrne came up with 'The Secret'. Byrne in fact attended Hicks workshops & consulted with her when she was working on 'The Secret'. Hicks in turn draws her inspiration from Jane Roberts. Though in a sense, Napolean Hill may have been the earliest writers on LOA.