The world is driven by Envy, not Greed. Everyone needs something to look forward to. The stoic find it in the act of showing their kids something new, or the joy of planting a plant and waiting to see how it comes out. But if you think you’ve been deprived of something (money, attention, novelty, experiences, career progression) then you can be wound up like a spring in childhood / early career and overcompensate. You find out eventually, when you’ve burned your time, heart, energy, money, what truly matters to you. And then you may hopefully get more of it to look forward to. Have you noticed that after having 7 kids even Elon Musk started spending more time with at least one of them - by being more of a caregiver than an absentee famous father.