I consider “work,” in its most universal sense, as meaning anything that you want or need to be different than it currently is.
Many people make a distinction between “work” and “personal life,” but I don’t: to me, weeding the garden or updating my will is just as much “work” as writing this book or coaching a client.
– David Allen in Getting Things Done
However, I’m really liking the definition above by David Allen. What do you think?