Support and pressure are based on two important emotions—pain and regret. Those who bought at the upper edge of the range experience significant pain when the price falls, and they wait for the price to rebound, so they do not sell. When the price rebounds near the buying price, they choose to sell immediately. Those who short are also waiting for the price to rebound to short, and they regret not shorting earlier; this feeling of regret makes them short again when the price returns to the initial level they wanted to short. These two emotions create the upper edge of the range. The emotions of pain and regret prevent the price from breaking out upwards.