What investing opinion have you completely changed your mind about?

Over time, many investors change their views as they gain experience. Maybe you used to believe stock picking always beats index funds, cash was king, dividends were everything, or that timing the market was possible. What opinion have you completely changed your mind about, and what experience made you change it? I'm interested in hearing lessons that only come from years of investing. submitted by /u/Capable_Card_986 [link] [comments]