In retrospect, the mistakes that led to my crash seemed embarrassingly obvious. First, I had been wildly overconfident and had let my emotions get the better of me. I learned (again) that no matter how much I knew and how hard I worked, I could never be certain enough to proclaim things like what I’d said on Wall $treet Week: “There’ll be no soft landing. I can say that with absolute certainty, because I know how markets work.” I am still shocked and embarrassed by how arrogant I was.