That which we obtain too easily, we esteem too lightly. It is dearness only which gives everything its value. Heaven knows how to put a proper price … - Stephen Covey

Think about taking a trip on an airplane. Before taking off, the pilot has a very clear destination in mind, which hopefully coincides with yours, and a flight plan to get there. The plane takes off at the appointed hour toward that predetermined destination. But in fact, the plane is off course at least 90 percent of the time. Weather conditions, turbulence, and other factors cause it to get off track. However, feedback is given to the pilot constantly, who then makes course corrections and keeps coming back to the exact flight plan, bringing the plane back on course. And often, the plane arrives at the destination on time. It’s amazing. Think of it. Leaving on time, arriving on time, but off course 90 percent of the time. If you can create this image of an airplane, a destination, and a flight plan in your mind, then

The ability to subordinate an impulse to a value is the essence of the proactive person. Reactive people are driven by feelings, by circumstances, by conditions, by their environment. Proactive people are driven by values — carefully thought about, selected and internalized values.

Give no answer to contentious arguments or irresponsible accusations. Let such things "fly out open windows" until they spend themselves.