I haven't heard of NLP before, but reading about it now it's setting off all my old skepticism alarms. The claims it makes seem to be very vague and optimistic. I'm especially wary of things like the links you provided that talk about having "over 200 patterns"; I don't buy my textbooks based on their page count.

Self-hacking is cool, but any advice given along those lines needs to be backed up by solid literature something fierce (i.e. see lukeprog's How to Be Happy) to be plausible, and even then you should generally expect that any given piece of advice will only have a moderate chance of working on any given person.

Saying "I'm smart and I think it's worthwhile" isn't enough; lots of smart people think religion is worthwhile. If NLP has a central theory behind it, rather than just being an umbrella term for a bunch of disparate self-hacking techniques, then where can we find a step-by-step explanation and solid justification of that theory? And if there's isn't a central theory, then each "pattern" will have to be presented and justified on its own, and survive on its own merits independent of its sisters.