count one's chickens
count one's chickens before they hatch

But after so many years in the business, they know enough not to count their chickens.

"I think it's a little early to count our chickens."

All seems to be going to plan but then we haven't broadcast anything, so we're not counting our chickens yet.

That's what I was trying to tell everybody: don't count your chickens before they hatch.

I gave up counting my chickens a long time ago.

In other words, don't count your chickens before you know where they are hatched.

We must not count our chickens before they are hatched.

No one here is guilty of counting their chickens before they hatch.

"I think Jack is counting his chickens before they're caught and cooked."

That kind don't count their chickens until they are hatched.