A 2x2 matrix diagram labeled "Circle of Influence" on the vertical axis and "Circle of Concern" on the horizontal axis. The quadrants are as follows: Top-left (high influence, low concern): "Cuddling with the snoring dog." Top-right (high influence, high concern): "Sealing drafts with weatherstripping." Bottom-left (low influence, low concern): "Moving to a warmer climate." Bottom-right (low influence, high concern): "Enforcing the thermostat setting."