As someone who makes his living helping people get out of the box, I've heard this now iconic phrase uttered thousands of times in the past 25 years. No matter what industry, continent, or mood my clients are in, none of them aspire to be box-bound.
I've been doing my own research these days, trying to figure out how many peace organizations exist on planet Earth. Estimates vary greatly, but the most credible source I could find -- Housman's Peace Resource Project -- lists 3,330.
At the core of the self-help book world is a fundamental assumption: that there is a self to improve -- an essence at the core of a human being that is flawed and needs some tweaking. This is the province of The Greatest Truth of All: You Are Alive!.