David Hamelech and Prayer

David was always in a state of prayer,Rav Sender(on Shavuos,page 85-86) in the name of his rebbe Rav Chaim Zimmerman.

Reb Nachmun of Breslov on teaching

The tzadick must give mussar to the righteous that there is infinitely more to acquire; and to the sad/depressed give chizuk that GOD is everywhere-  even in HELL.