Presuppositions or assumptions are the beliefs that someone practicing NLP will find useful for creating changes in themselves and the world, more easily and effectively. No one is wrong or broken. People work perfectly to accomplish what they are currently accomplishing. People already have all the resources they need. Behind every behavior is a positive intention.
Every behavior is useful in some context.
The meaning of a communication is the response you get. If you aren't getting the response you want, try something different. There is no such thing as failure. There is only feedback. Choice is better than no choice.