I don't think there's a real difference here. All of those long-term returns on investment are just the accumulation of short-term cold/tired/miserable experien

I don't think there's a real difference here. All of those long-term returns on investment are just the accumulation of short-term cold/tired/miserable experiences. Getting in shape is just going outside in the cold/heat and running for a short while. You just have to do that over and over again. Getting good at a musical instrument is simply the accumulation of many many boring practice sessions.