This same mentality affects people who never gamble.

FORBES: Another Investment Tip For Lottery Winners

Fine dining is the most popular nongambling attraction for casino patrons, while more than a quarter of all casino patrons never or rarely gamble when they visit a casino.

WSJ: US casino revenue up nearly 5 percent in 2012

Key person insurance represents a gamble you never want to win.

FORBES: The Corporate Equivalent Of A Kevlar Vest

But it is always a gamble: there is no guarantee that junior will have the talent to become the concert pianist mother never was.

ECONOMIST: Gene genies

"I'm confident it won't be a gamble - judge me by my results, " said Di Matteo, who wants to see a never-say-die spirit from his players.

BBC: I am not a gamble, says Di Matteo