Visit a Cemetery!
This is where you will find the scattered untold stories of alternate realities that could have been part of the mainstream narrative provided, they all managed to come to fruition.
History is full of half-truths and cover-ups. Survivorship bias is rampant in our society and it inflates our egos which in turn, assign higher probabilities of our success in various areas of life.
Since a lot of it has been passed on orally, either real messages have been lost in translation or were suppressed to suit the taste of society and temperament of dominant voices.
So, when they tell you to look back to move ahead, think twice.
History is invaluable provided you get to know about the real one!
During world war II, the planes which made it back safely were scrutinized to fortify the weaker areas…and the lost ones were forgotten—which could have given the real information about the damage patterns.
In investing, if failed enterprises and the reasons for failures are studied more cautiously then the chances of choosing the right ones will go up markedly.