Rhonda Byrne

This short book is based on the 'law' of natural attraction, or 'thoughts are things'. What you think you draw to yourself, so if you think negative thoughts or a thought with a negative in it (eg. I don't want to gain weight), you will draw those things to yourself and they will continue to happen to you (eg. you gain weight since you are thinking about gaining weight - the 'don't want to' part is ignored).
On the other hand, if you focus on a positive that you want, and you are very specific about it, preferably writing it down, you send out a 'thought frequency' and that very thing will be attracted to you and come to pass.
My take away - stay biblical in your thinking. The Bible does have support for this kind of thinking: Philippians 4:8 (King James Version (KJV)): Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.
So yes, phrase your thoughts in a positive manner (exactly what you do want, not what you don't want) and focus on those thoughts. However, praise God for the good gifts he freely gives those who abide in Him rather than thinking the universe provides whatever you ask of it.… (altro)