Английский словарь американских идиом - count one's chickens before they're hatched

{v. phr.}, {informal} To depend on getting a profit or gain before you have it; make plans that suppose something will happen; be too sure that something will happen. Usually used in negative sentences. * /When Jim said that he would be made captain of the team, John told him not to count his chickens before they were hatched./ * /Maybe some of your customers won't pay, and then where will you be? Don't count your chickens before they're hatched./