How do good investors become "ace" investors, and then stay that way? Experience has a lot to do with it. But so does one key habit – seasoned professionals often keep a regular investment diary.
Over time, such a practice will help you understand your mistakes, and be increasingly aware of how your emotions work against you.
What is an investment diary? "Every day, you write down what happened in the markets and what you did," says Jeffrey Saut, chief investment strategist at Raymond James. "I have notes on the markets back to the 1960s." Read more here.