You're comparing your accomplishments to the rest of society. If you feel like you haven't used your last two decades appropriately, and feel like you could rea

You're comparing your accomplishments to the rest of society. If you feel like you haven't used your last two decades appropriately, and feel like you could really use a couple centuries, remember that if that were the case, everyone else would probably have the same lifespan, and you'd be back to the same position you are now, comparing yourself to others.