Cold showers, although extremely painful during the first minute or two, can help you deal with challenges better. It takes a lot of willpower not to jump out of the shower or turn the knob back to the hot water.Consequently, you’ll be more at control when faced with an overwhelming temptation to give in.

However, it’s a good idea to take cold showers for a week or two as a short-term experiment. It will teach you a lot about your limits. You’ll understand when you cross the line from, “I’m going to freeze,” to, “I can stand it,” to, “It’s not that bad.” Soon, you’ll apply your findings in other areas of life, most notably during strenuous physical exercise.

Please refer to the book for more details on this activity.