Beliefs are a tricky thing. There are indeed supposed to be a whole bunch of things to help, like NLP, or paraliminals, etc, but I hvaen't found them to be particularly useful unless you know exactly what your beliefs are. However, I've found that just by realizing what my particular resistance is, it somehow dissolves, as if conscious light is all it needs.
I've also heard the theory that all limiting beliefs have some sort of ego advantage, so they are either desires for approval, safety or osmin else I can't remember.
As an example, the cynicism you're talking about? I discovered that my biggest block to that cynicism was that I labelled myself as a "scientific" no-nonsense kind of guy, and wanted other people to see me as such. MOst of all, I did not want other people to judge me as being unscientific (and thus, in my mind, irrational and perhaps stupid).
Recently I've also discovered I believe solving puzzles solves problems, but not in all cases. A good intellectual puzzle is fun but it does not necessarily matter or solve a problem.
Some mroe info here:
Mind-Manual » Beliefs, Beliefs, Beliefs, Beliefs http://www.stevepavlina.com/blog/200...ering-beliefs/ http://www.stevepavlina.com/blog/200...ctive-beliefs/ http://www.stevepavlina.com/blog/200...ncial-beliefs/
and search pavlina's archive page for "belief"