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How my success led to my fall

In my new career teaching investing and investment fund entrepreneurship at Kase Learning, one of the most important things I teach is my story and the many, many lessons that can be learned from it.

I launched a tiny hedge fund with only $1 million under management in January 1999, running the entire business myself from my laptop on a rickety Ikea desk in a corner of my bedroom for the first five years. But I learned fast, worked around the clock, made some good decisions and, frankly, got lucky over the first dozen years, during which I nearly tripled my investors’ money in a flat market and grew to three hedge funds and two mutual funds with $200 million under management.

And then I screwed it up over the next seven years, seizing defeat from the jaws of victory. My funds chronically underperformed, which led to assets shrinking to $50 million and, eventually, the decision to close my funds last September.

You might think the single more important and valuable thing I teach during my Lessons from the Trenches investing bootcamp is how I achieved such success in my first dozen years.

But you’d be wrong. While there are of course many important lessons I teach about this early period in my investing career that will benefit those who seek to achieve similar success, I believe the most valuable thing I teach is what happened afterward.

Studying mistakes and failures

“Huh?” you might ask. “Why should I study mistakes and failures?”

Here’s why: If you want to learn anything difficult (investing, surgery, flying a plane, etc.), don’t just study success: Spend an equal amount of time studying mistakes and failures. As Charlie Munger says, “Invert, always invert” and “All I want to know is where I’m going to die so I never go there.” (I discussed this way of thinking in my commencement address two years ago at my alma mater, Eaglebrook; video here, text with appendices here.)

During my two years at Harvard Business School, I read ~300 case studies and pretty much every one featured a heroic protagonist, facing a difficult issue, but almost every time reaching the right decision and achieving great success. I can’t recall a single one in which the protagonist made wrong decisions and screwed it all up. It’s absolute negligence on the part of HBS (and, to be fair, pretty much every other business school I suspect) to teach success 99% of the time. That’s not how the world works — everyone makes mistakes and suffers setbacks. In addition, if you want to make good decisions, it’s critical to be able to rule out bad ones, which means you need to study them!