There are two kinds of people in any organisation: Polluter and Purifiers.
Polluters are like smokestacks, belching out dirty smoke all the time. They hate clear skies, and no matter how good it gets they find ways to make it gloomy. When the people around them breathe toxins they feel sicker and sicker.
Ask your self today: when I spend time with people, do they walk away feeling polluted or purified ?