In the early 19th century, this concept was introduced by Phineas Quimbly. He did not use the term ‘law of attraction’ but what he introduced to the world was on the same theme. Later in the year 1877; Helena Blavatsky wrote a book where she explained the law of attraction.
Its basic concept was related to health. The law of attraction states that like attracts like i.e. if you think positive then positive; things will start happening in your life. We have all the power within us. We are the cure as well as the disease. It is all up to you what you chose to be.