NLP ( Neuro Linguistic Programming). Detailed history can found in wiki ( http://en.wikipedia.org/wiki/Neuro-linguistic_programming ). I shall tell you about the results, not the history.
To set the background right,
We are observing every day that some people will excel in whatever they do. For some, it is the other way around, they fail in whatever they do. As Shiv Khera says, "Winners don't do different things, they do things differently." But how? What is the difference?
I have one answer to this question ( There are many, and this is one among them), NLP.
NLP have different methods and models to understand how people think, behave and learn. It gives flexible methods to bring a positive, immediate and a sustainable change in individuals and everyone around them.
So Neuro Linguistic Programming reveals the fundamental connection and affection between our mind, our language and our behavior. The more we understand the relation the easy it is to bring a positive change in our life. So briefly we have a "user manual for our brain".