The takeaway is another example of a thought found in the work of the Greek poet Hesiod (c.700 bc), "observe due measure; moderation is best in all things" (https://www.oxfordreference.com/view/10.1093/oi/authority.20110810105420435).

The most sustainable path, and arguably one that will bring optimal results to most people is to balance risks, and balance rewards.

The former, balancing risks, is what happens when you diversify your revenue sources and investments. The latter, balancing rewards, is what happens when you allow yourself to spend a portion of increased income here and now, because you never know if tomorrow will arrive and what it will bring. I expand on that thought here: https://medium.com/financial-strategy/your-optimal-path-to-being-able-to-retire-comfortably-1d97882366a.