I looked into my concerns and activities, and one thing I did was to resign my full-time, tenured professorship. I created what I call 'a portfolio life', setting aside 100 days a year for making money, 100 days for writing, 50 days for what I consider good works, and 100 days for spending time with my wife.
I mark these days out in my diary. When people phone and ask me to do something, I can then say, 'I'm terribly sorry, that's my day with my wife'. It is a freeing way of life. 100 days a year for me is enough for making money, there is no point in making more; and I find I do as much work in 100 days as I used to in a year.
I go to a lot of management courses and try to turn these managers into portfolio people - 'don't just be a systems manager for IBM, don't be a one-dimensional character, become a portfolio person now'. I am trying to make such a lifestyle respectable for career people. If somebody asks what you do, and you can reply in one sentence, you're a failure. You should need half an hour.
(Money quote bolded.)
Handy's one of the two "management gurus" whose work I don't actively dislike; since the other is Peter Drucker, Handy takes the price for Colin's favorite living management guru. I only discovered his ideas about living the "portfolio life" recently, though I'd already unknowingly put a few of its concepts into action. The number of areas of life I don't live portfolio-style has been diminishing sharply with time. Either I'm a management genius, or this is a manifestation of my driving, absolute fear of putting too many eggs in one basket.