How much a person will actually need in retirement is, frankly, anyone's best guess. A recent survey shows that $1.46 million is the average figure U.S. adults provided when guessing at how much it would take to retire comfortably. That’s a 15% jump from the estimates people gave just a year earlier.While plenty of American workers are thinking about how much they’ll need in retirement, Lois Moore of South Bloomfield, Ohio, has been asking herself the opposite: how much she doesn’t need. To answer that question, she set a net worth limit on herself for her retirement years.“When I have shared [the net worth cap idea] with people, they wonder how I can be sure that I won't regret it,” said Moore. “And I can't be sure that I won't regret it, but I can't be sure of a lot of things.”Click the player above to hear her story.