A seasoned investor once told me, "I've made more money from my mistakes than my wins — because I learned twice." Lesson: Losses teach twice: once in risk and once in humility. Consider my friend Marcus, who I met as a young trader who turned $40,000 into $1,200,000 in his first year. Flush with confidence, he stopped listening to mentors and doubled down on reckless positions — until the market shifted and left him $3,000,000 in the hole. In that hollowness, the real education began. He spent a year not trading, but studying every decision that had led him astray, realizing his early wins had taught him nothing because luck had done the teaching. Lesson: Years later, Marcus became quietly successful — not because he stopped losing, but because he stopped fearing it. Losses, it turns out, are not the opposite of progress. They teach twice: once in risk, and once in humility.