Clarity & simplicity as well as ambiguity & mystery is essential to the nature of wisdom. Most of us are comfortable with one or the other, but we need to live contentedly in both.
Tim Keller lists six things necessary if the followers of Jesus are to make the gospel attractive and plausible in our increasingly post-Christian world.
Psychologists call it languishing; most people call it the Blahs. There are ways to move from languishing towards flourishing, and to help others move, too.