The Johari Window is a tool to help better understand relationships. Believe it or not, it was actually created by Joseph Luft (Jo-) and Harrington Ingham (-hari), two psychologists who were born in 1916.

The original idea was to think of a four-pane window in which the horizontal axis has "Known to self" on the left side, and "Not known to self" on the right. The vertical axis has "Known to others" at the top, and "Not known to others" at the bottom. The four quadrants are labeled Arena, Blind Spot, Hidden and Unknown.