Thermometer or Thermostat?

I recently finished the book "Tribes" by Seth Godin. If you are not familiar with Seth, he has great insight into marketing and customer relations. He also has a great blog that is worth subscribing to. One of the concepts that he shared in the book was insightful to me...so I will share it with you. As Seth explains, people have a tendency to fall into two categories, thermometers and thermostats. thermometers do little more than report on current conditions, oftentimes complaining that it is too hot or too cold. Thermostats, on the other hand, change the internal conditions, regardless of the external conditions. Insightful, I thought. So, how do we ensure that we are, in fact thermostats, and how do we coach others to be the same?