If your vision is not aerated by heaven's reality you will be overwhelmed and discouraged. The authentic man of faith is a realist—but in both directions. He recognizes the problems, but also the solutions. A realistic view of both earth and heaven makes for a robust faith and gives hope in any situation to everyone who observes us.
When a difficult problem, a crushing weight comes into your life, is joy your first response? Do you even consider the possibility that you could rejoice in the midst of the difficulty? If this were a possibility, it could only be explained as something supernatural. Something initiated by God Himself.