NLP means Neuro-linguistic programming
NLPs creators claim there is a connection between neurological processes (neuro-), language (linguistic) and behavioural patterns learned through experience (programming), and that these can be changed to achieve specific goals in life. They also claim that NLP methodology can model the skills of exceptional people, allowing anyone to acquire those skills. And that NLP can treat problems such as phobias, depression, tic disorders, psychosomatic illnesses, near-sightedness, allergy, common cold, and learning disorders.
There is no scientific evidence supporting the claims made by NLP advocates and it has been discredited as a pseudoscience by experts.
Source: Wikipedia