Extracted from the book: How to Trade in Stocks, Jesse Livermore
Market Timing - When to enter and when to exit a market trade - "when to hold 'em when to fold 'em".
Money Management - Don't lose money - don't lose your stake, your line. A speculator without cash us like a store owner with no inventory. Cash is a speculator's inventory, his lifeline, his best friend - without it you're out of business. Don't lose your line.
Emotional Control - Before you can successfully play the market you must have a clear concise strategy and stick to it. Every speculator must design an intelligent battle plan, customized to suit their emotional makeup, before speculating in the stock market. The biggest thing a speculator has to control is his emotions. Remember, the stock is not driven by reason, logic or pure economics. It is driven by human nature which never changes. How can it change, it's our nature.