Because these firms listened to their customers, invested aggressively in new technologies that would provide their customers more and better products of the sort they wanted, and because they carefully studied market trends and systematically allocated investment capital to innovations that promised the best returns, they lost their positions of leadership.

One quarter of Medicare beneficiaries have five or more chronic conditions, sees an average of 13 physicians each year, and fills 50 prescriptions per year.

If a company truly wants to resolve the innovator's dilemma, it does need to be able to create wave after wave of disruptive innovation. And those disruptive innovations will typically grow to the point where they do cause some pain for leading companies. But most disruptive innovations create substantial new growth before they cause that pain.

Watching how customers actually use a product provides much more reliable information than can be gleaned from a verbal interview or a focus group.

My conclusion: Management is the most noble of professions if it's practiced well. No other occupation offers as many ways to help others learn and grow, take responsibility and be recognized for achievement, and contribute to the success of a team.

Intimate, loving, and enduring relationships with our family and close friends will be among the sources of the deepest joy in our lives.

Children build self-esteem by doing things that are hard and learning what works.