A bad investment can shake our confidence, but it is the hard-won lessons, not the losses, that shape us into better investors. Have you ever made an investing mistake, one that you really regretted? One of my earliest and most painful investing lessons was when I bought into SingPost in 2015. I thought the company had solid fundamentals and growth potential, based on what my broker told me. He urged me to buy, saying it was such a no-brainer move that he had already persuaded his parents to