The idea of blessed is key throughout the Psalms. 

Psalm 1 begins with it and the thoughts expressed have great significance when applied to leadership.

First, leaders must be careful where they go and who they listen to regarding their responsibility.

Second, the heart and success of leadership are the result of following the path provided by God.

Third, the contrast indicates there are consequences when one fails to follow the righteous way.

Leaders have an opportunity to lead others on the right path. The responsibility is great, but the rewards of a fruitful life and eternal prosperity are worth the price.