“I believe that having the discipline to follow your rules is essential. Without specific, clear, and tested rules, speculators do not have any real chance of success. Why? Because speculators without a plan are like a general without a strategy, and therefore without an actionable battle plan. Speculators without a single clear plan can only act and react, act and react, to the slings and arrows of stock market misfortune, until they are defeated.”

—Jesse Livermore, How To Trade In Stocks