Ray, M., & Myers R.
(1986).
Creativity in business.
"When we ask business people what is bothering them, the answers fall almost entirely into five categories: career or purpose in life, time and stress, balancing personal and professional life, issues of money and self-worth, and bringing personal creativity into the business organization. Do they sound familiar to you? They are so pervasive that we now call them the five challenges. They must be met in order for you to have a fully creative life in business." (p. 10)
Covey, S. R., Merrill R. A., & Merrill R. R.
(1994).
First Things First.
"Arnold Toynbee, the great historian, said that all of history can be written in a simple little formula—challenge, response. The challenge is created by the environment, and then the individual, the institution, the society comes up with a response. Then there's another challenge, another response. The formula is constantly being repeated.
The problem is that these responses become codified. They get set in cement. They become a part of the very way we think and the way we perform. They may be good procedures, good practices. But when we're faced with a new challenge the old practices no longer apply. They become obsolete. We're out in the wilderness trying to navigate with a road map." (p. 53)