Last year around this time we released a two-part podcast entitled David's Biggest Losers. Let's make that a tradition here and talk about another half-dozen stocks that have performed poorly over the past 3 years. We don't like to dwell on failure—and indeed can learn a lot more by studying our wins—but it's good to eat some humble pie once in a while and remember that we don't have to win them all to win the game.

Frameworks – especially those that can be explained in a matrix – are common in investing, but what should rule-breaking investors think about them? David Gardner discusses the pros and cons of those ubiquitous style boxes, and shares a couple of his own.

We all feel like the world's worst investor sometimes. David coaches on how to handle yourself - and your portfolio - when the market is down and your confidence in your investing abilities has been dragged down with it.

David Gardner shares three principles he uses when evaluating potential rule-breaking investments -- plus several principles from our listeners.

Wrapping up this two-part series on losers, David explores the lessons we should -- and shouldn't -- learn from investing mistakes.

In Part 1 of this two-part series, David shares his five biggest losers. (And next week, he’ll talk about what we can learn from them.)