NLP has a number of principles, more commonly referred to as presuppositions. These presuppositions are not claimed to be true. We accept them as if they were true, and apply them in practical ways in our daily life. If they bring real improvements in our life or performance, we can continue to use them as if they were true.
These presuppositions form an important basis for understanding what NLP is all about. They are concerned with how we may live our lives in a positive way, and how we can think and communicate effectively. The benefits could almost be immediate as NLP is based on practical experience rather than theory.
The number of presuppositions varies on different lists.