Unfortunately, this author has an extremely superficial understanding of the LOA. While he may claim to have read all of the books, he clearly didn't understand them. He really isn't to blame as unfortunately many of the books written on the LOA are written by people that do not fully understand it themselves. The statement that positive thoughts always bring positive things is a faulty premise that is not at the basis of the LOA.
Some personal questions that you don't have to answer on this site but to think about. Is your house paid off? If you have children, are all of their college tuitions completely paid for? Are you still working at a job? If so, is that because you'd rather be working there than on a long vacation to your favorite places? Are you driving a brand new (fill in the name of your favorite car here)? Are all your hopes, dreams, and wishes coming true?