It feels like we’re always hammering the same points on investing over and over again. Don’t watch your portfolio. Stop tracking the market’s daily gyrations. Focus on the long term. Stay diversified. Don’t try to stock pick or market time. Stick with the asset allocation determined earlier and rebalance. Stick to these tried and true principles based on solid research and you’ll be fine.
Sometimes, we feel that we can be exceptional or lucky and we try for the moon. Humans are poor learners from others’ failures, and rather learn best from a strongly emotional personal experience (like a major loss in the market due to a self-inflicted error). I believe everyone should learn that by starting out playing single stocks with small amounts of play money, ideally earlier in life rather than later, so we can quickly return to the right path having learned our lesson in a way that sicks.
In other words, use the “the martyr system” to your advantage, letting the hippocampus impart the long-term financial scars from personal failures that will leave lasting memories of what not to do.