One of the tangible proofs of Law of Attraction is when we start attracting money through affirmations. Parallel to the western concept of using affirmations, eastern philosophy talks about chanting of mantras for manifestations of your desires. There are mantras of God and Goddess of wealth chanted in India for prosperity.
I have tried a combination of both and found it really works...gives faster results!!
Its my personal observation that you tend to attract ideas and opportunities to make money.
The key is to believe!