Sometimes I look at people who are extremely wealthy like Oprah Winfrey or Donald Trump who could retire today but continue to work. Aren't they happy? How much more money do they need?
Surely it isn't about the money - it's about the work itself and the non-financial rewards that come with personal and professional achievement. The money at that stage becomes a byproduct not the purpose of the work.
I seem to remember some sort of saying that went - earning $1 more than you need is a good week, earning $1 less than you need is a bad one.