Lesson Number One: Cut your losses quickly.
Lesson Number Two: Confirm your judgment before going all in.
Livermore was famous for throwing out a small position and waiting for his thesis to be confirmed. Once the stock was traveling in the direction he desired, Livermore would pile on rapidly to maximize the returns.
Lesson Number Three: Watch leading stocks for the best action.
Livermore knew that trending issues were where the big money would be made, and to fight this reality was a loser's game.
Lesson Number Four: Let profits ride until price action dictates otherwise.
"It never was my thinking that made the big money for me. It always was my sitting."
Lesson Number Five: Buy all-time new highs.
Lesson Number Six: Use pivot points to determine trends.
Lesson Number Seven: Control your emotions.