NLP stands for Neuro-Linguistic Programming. The neurological system regulates how our bodies function, language determines how we interface and communicate with other people and our programming determines the kinds of models of the world we create.
One of best know NLP Practitioners is Tony Robbins. Tony Blair, Bill Clinton, J.K. Rowling, Tiger Woods, Bill Gates, and Oprah Winfrey, are some of the people who use or have used NLP for their own development.