What does Neuro Linguistic Programming mean?
‘Neuro’ refers to the neurological processes of seeing, hearing, feeling, smelling and tasting which are the ways people experience things. ‘Linguistic’ denotes the way in which we use language to represent our individual experiences and to communicate with others. ‘Programming’ in this case means the strategies we use to organise these inner processes to produce results. 

How does it work?
In essence the world we perceive is not necessarily the real world. We each create a unique model of the world in our heads at an unconscious level, then live in that model as if it were real. The majority of problems people have develop from how we perceive the world rather from how the world actually is. 
As you begin to understand how these models in your mind work, you can learn to change unhelpful habits, thoughts, feelings and beliefs for more useful ones and achieve magical results.