I had an interesting discussion with a friend recently who told me that he'd sold all his stock investments after having the best trading year of his life. He reasoned that he'd hit the heights of what he could ever have expected viz-a-viz the markets, and that it'd be all down hill after that. Have any of you ever thought about what would cause you to liquidate everything and stop trading? Some have that decision forced on them, but I wonder if it's ever prudent to have a plan in place if certain positive conditions are met. Thoughts?