According to Wikipedia the psychology-related technique called NLP is “largely discredited” but I did an NLP course yesterday and found it really interesting, and I think useful (too soon to tell maybe?).
The 4 pillars of NLP are:
There are also some “pre-suppositions” (that are too long to type on my smart phone).
I plan to read more about NLP but I don’t at the moment think its bad name is entirely deserved. Worth reading about if psychology and human communication is interesting to you.