In addition to the time factor, we’re also more likely to compromise our values—and even our ethics—when we’re tired and stressed. As our working day wears on and we become more physiologically depleted because we used up most of our focus and energy in the morning, we have less willpower in the afternoon to do the right thing. When we’re tired and stressed, not only are we less likely to enact our values, but we’re more tempted to lie, cheat, or steal.