We all build internal sea walls to keep at bay the sadnesses of life and the often overwhelming forces within our minds. In whatever way we do this—through love, work, family, faith, friends, denial, alcohol, drugs, or medication—we build these walls, stone by stone, over a lifetime. One of the most difficult problems is to construct these barriers of such a height and strength that one has a true harbor, a sanctuary away from crippling turmoil and pain, but yet low enough, and permeable enough, to let in fresh seawater that will fend off the inevitable inclination toward brackishness.