Just don't plan to retire, find an occupation you enjoy and keep doing it. That way the pay isn't nearly as important and you will have a better life overall.

The Japanese call it "reason for getting out of bed in the morning" and without it you die quickly.

Very few people in practice can maintain that reason without having some kind of obligations or similar to others (people, pets, plants etc) to meet. Seen many, many say otherwise, very few actually able to do it, barely a handful.