Some of the biggest mistakes investors make aren't with the stocks they buy.In this podcast, Motley Fool analyst Emily Flippen and contributors Jason Hall and Jeff Santoro look back at some of The Motley Fool's most painful sell decisions. They dig into:Why selling is so emotionally tempting and is often the biggest mistake for retail investors.How a single five-, 10-, or 100-bagger can offset other losers.How to build a framework to help investors hold onto winners without holding everything forever.To cat ...