Yet many often find, too late, that they still don't have enough, because they never paid attention to their investments and didn't build up enough wealth.

WSJ: How Emotions Affect Your Investing

"You can never get enough of what you don't need, " she says.

WSJ: Shop 'Til You Stop: How to Treat Compulsive Spending

If there's one thing Ferguson can rely on, it's that criminals are never in short supply and there aren't enough bars to put them behind.

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And if we don't get it early enough, we panic in case we never shall.

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He said he never took banned substances -- wasn't that good enough?

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Or there's the story of the Kiton-suited banker who never met a wooden shoe tree he didn't like enough to take back with him to Park Avenue.

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"I had never worked as a commercial gallerist before, and I wasn't brave enough to just sign a lease, so this was my organic, slow way into things, " she says.

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"I never thought it should all be held in Bamako, because there wouldn't have been enough room".

BBC: Mali to reap the rewards

Simdax, which is given in the hospital when patients are extremely sick, never reduced mortality by a large enough margin compared with dobutamine to be sure the results weren't due to chance, but there was a consistent trend toward a benefit.

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"I've never been one for dogma and don't feel like any 'side' could represent my free will well enough to go straight ticket, " he said.

CNN: Neither Republican or Democrat: Why I'm an independent