NLP is a model of communication and personal change that focuses on the connection between neurology, language, and human behavior patterns that are learned through experience. It was developed in the 1970s in California by Richard Bandler and John Grinder. The core concepts of NLP include modeling subjective experiences, understanding unconscious beliefs and behaviors, and using language strategically to help achieve goals and change perspectives. NLP provides tools like the Meta Model for questioning assumptions and the Milton Model for indirect suggestion to help people develop awareness and flexibility.