Senescence is an inevitability. All we can do is try to strike the balance between graceful acceptance and raging against the dying light.

You might want to keep trying to rise, using a path that builds on your natural strengths: sales, analysis, managing people, whatever, and keep asking for honest feedback. When you reach the point at which it feels clear you've topped out, revise your job description or take a step back. Up is not the only way.

Entrepreneurship may be the most under-taught subject.

What may create even more jobs is to develop more entrepreneurs, of course, ethical ones.

I'm one of the many people for whom coffee helps but often, inattention is a symptom of something else: for example, that you're not getting six to eight hours of sleep.

Sometimes, low-level jobs are challenging even to someone with CEO potential.

Some people who are recovering from depression want to use the lessons they're learned in coping with depression and their empathy for people with depression. Others want their career to have nothing to do with depression.