I am watching Deal or No Deal a few weeks ago. The NYC hero who saved another man's life in the underground was playing. Keep in mind, he is a construction worker making $1200 a week (62K annually) with 3 kids.
So he is pretty lucky and down to 6 cases with an offer of 110K from the banker, the 1 million is still in play. He says: I came with nothing, I have nothing to lose. This is actually not true, because that is 2 years of salary for him. He picks a box, small number in it, the next offer is 210K!
He says, well, I want that million, I feel I am lucky! And so he is, picking another case with a small amount. Now there are only 4 boxes left, the million and 3 very small amounts. The offer is something like 310K!!! That is 5 years salary for the fellow, he could pay for college for all his 3 kids and still have a European vacation, but no, he still thinks he doesn't have anything to lose (I guess he didn't understand that the offer can be lost), so he picks another box! And yes, that is the million, so all he has is 3 very small amount under $100 and he ended up going home with $25. Well, at least that is still more than what he came with.
The moral of the story is obvious, take the profits as long as the profittaking is still good!