You don't argue with a four-year old about why he shouldn't eat candy for dinner. You don't punch a mentally handicapped guy even if he punches you first. And you don't argue when a women tells you she's only making 80 cents to your dollar. It's the path of least resistance. You save your energy for more important battles.
We don't always have an accurate view of our own potential. I think most people who are frightened of public speaking and can't imagine they might feel different as a result of training. Don't assume you know how much potential you have. Sometimes the only way to know what you can do is to test yourself.
The most important thing when you study hypnosis is that you learn that humans are irrational. Until you understand that, hypnosis is hard to do... For me, it was this great awakening to understand that humans are deeply irrational, and it's probably the greatest influence on me in terms of my writing.
My failed corporate career became the fodder for the 'Dilbert' comic. Once it became clear I would not be climbing any higher on the corporate ladder, it freed me to mock managers without worrying that it would stall my career. Most failures create some sort of unplanned freedom. I took full advantage of mine.