After three years, if the investment is still underwater, the cause is virtually always a misjudgment on the intrinsic value of the business or its critical value drivers. It could also be because intrinsic value has indeed declined over the years. Don’t hesitate to take a realized loss once three years have passed. Such losses are your best teachers to becoming a better investor. While it is always best to learn vicariously from the mistakes of others, the lessons that really stick are ones we’ve stumbled though ourselves. Over time, learning from your stumbles, you’ll begin to notice a
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