Many people persist in the wrong job, trying year after year to get good at what they're bad at or at what they dislike. Like marrying the wrong person, working in the wrong job is a prescription for a life of toil-and-groan.

You brain does its best when it is doing a task it can do well. That's basic brain science.

To create worry humans elongate fear with anticipation and memory, expand it in imagination and fuel it with emotion. The uniquely human mental process called worrying depends upon having a brain that can reason, remember, reflect, feel, and imagine. Only humans have a brain big enough to do this simultaneously and do it well.

People associate hard work and overload with stress. But, like suffering, stress is complicated. Bad stress is stress that a system can't endure without suffering damage. It is unplanned, uncontrolled, allows no time for rest and recovery, and exceeds the capacity of the system to adjust to it. As the popular phrase suggests, it burns people out and, over time, it can decimate an entire workforce.

In order to do what really matters to you, you have to, first of all, know what really matters to you.

I agree with Stephen Covey that too many people spend too much time on doing what is urgent rather than on doing what is import.

No work is "most important." Or, put differently, all work is important but work done poorly becomes most important.