My No. 1 Trading Rule to my Son & DaughterBeloved son & daughter, in trading “the light can at any time go from green to red without passing at yellow.” The stock market answer to no one. Therefore, be a lifelong student of the market, use a trading plan with stop loss and never risk what you cannot afford to lose! Align your heartbeat to the market and manage your risk so that even you skip a beat, you are still around.