Normally must do the opposite. You must gamble when you are cold (so you can control every minute yourself and will stop in the right moment). If you will gamble when you are hot, you for sure will lose everything because being how mean not think. When don't think it is sure that you will lose because the mind doesn't have nothing to do with your desire to win and to use all the chances (read money) your "think" you have.
But my suggestion is to not gamble at all because the gambling make everyone hot when this everyone begin the gamble.
If you don't gamble you don't win. Some people just like to or want to be "hot".