N= Neuro - your neurological system. Or simply your wiring - and all that entails - connecting you body and your brain. But you are more than that. You take in information from the outside world; through your eyes, ears, sense of touch, your feelings, taste and smell. You then filter and arrange that information inside and use it to create behaviour that both you and other people interact with.
L = Linguistic - language and how you communicate. You communicate with other people and yourself through language, your tone of voice and your body language. This communication can be either ineffective or effective and only you can decide that based on your results.
P = Programming - your habits; that is the way you go about your daily life that makes it possible for you to perform effectively .....or not.
One way or the other the habit or program you are running is successful because you don't have to think about it - it just happens. The response by other people to the habit or even your own response to it is something else....a judgement about the behaviour. For example many people who procrastinate, smoke cigarettes or get anxious do not know how they do it, it just happens, - it is a habit . Just like driving the car you don't think about it you just do it. These habits make life easy, providing they are serving you in the way you want and they are delivering the consequences you desire.