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: One of the best lessons I learned very early, i.e., in my 20s, is not to, as the recentish meme says, "cling to a mistake just because you spent a long time making it".
Don't confuse your identity with an activity, and don't confuse your desire not to have made a mistake with some kind of hope that you can you can somehow unmistake it by holding onto or worse, forcing it more.