McKay, M., & Fanning P.
(1994).
Self-Esteem : A Proven Program of Cognitive Techniques for Assessing and Improving.
"Within a given profession or social level, our culture next awards worth based on accomplishments. Getting a raise, a degree, a promotion, or winning in a competition are worth a lot. Acquiring the right house, car, furnishings, boat, or college education for your kids—all those accomplishments are worth a lot, too. If you get fired or laid off, lose your home, or in any other way slip down the accomplishment ladder, you are in deep trouble. You lose all your counters and become socially worthless.
Buying into these cultural concepts of worth can be deadly. For example, John was a bank examiner who equated his worth with his accomplishments at work. When he was late in meeting an important deadline, he felt worthless. When he felt worthless, he got depressed. When he got depressed, he worked slower and missed more deadlines. He felt more worthless, got more depressed, worked less diligently, and so on in a deadly downward spiral." (p. 88)
Fromm, E.
(1955).
The Sane Society.
"[Man] is part of the machine, rather than its master as an active agent. The machine, instead of being in his service to do work for him which once had to be performed by sheer physical energy, has become his master. Instead of the machine being the substitute for human energy, man has become a substitute for the machine. His work can be defined as the performance of acts which cannot yet be performed by machines." (p. 180)