NLP is otherwise known as Neuro Linguistic Programming and is a system of methods and techniques that can help to replace negative habits, limiting beliefs, mental blocks and fears with new supporting beliefs as well as bringing about positive changes and behaviours.
NLP usually consists of a two step approach and system with the first step being to help people push away their limiting beliefs, self doubts and feelings of insecurity, because you cannot move on or be successful if you're still harboring negative thoughts and beliefs of limitations, lack and fear.
Stage two usually consists of developing new positive habits, so it's a case of out with the old and in with the new so you can be free of the burden and restrictions of your past which will enable you to go on to live a much more pleasant and fulfilled life experience.