Marcel Link in his excellent High Probability Trading is not the first to equate the skills of the professional gambler with the skills needed to succeed as a trader but he does it very convincingly:

[The professional gamblers] don’t take unnecessary risks or gambles. They know when the odds are in their favor and will bet more when the odds get better. If the odds aren’t there, they won’t risk nearly as much, if anything. They know how to protect their winnings, and they know how to call it a day when Lady Luck is blowing on some other guy’s dice. Having this discipline lets them come back to the table the next day. […] (more…)