If you focus on whatever you want, you will attract whatever you want. If you focus upon the lack of whatever you want, you will attract more of the lack. If you are paying attention to the way you are feeling, you will always know whether you are focused upon what you want or upon the lack of it – for when you are thinking of what you want, you are feeling good, and when you are thinking of the lack of what you want, you are feeling bad.
~ From Think and Grow Rich. If you are ever going to read a book, make it this book