Investing is not all success, success comes from failures that help us to draw lessons to be able to do better for the next.
Oh, how can it be? Certainly, if a person is able to take these failures as the great lessons, which teach him not to repeat his mistakes, it is possible, no doubts.
my biggest learnings certainly came from my biggest mistakes, but not always you can get some key insights. Sometimes though the insights were invaluable. Especially in investing. If you catch a fish by coincidence and loose it, well that is life. But if it helped you to find a better way fishing then it was worth it.