don't count your chickens before they're hatched in Czech
don't count your chickens before they're hatched in Czech
nechval dne před večerem
One should not depend upon a favorable (and typically overoptimistic) outcome to one's plans until it is certain to occur.
neříkej hop, dokud nepřeskočíš
One should not depend upon a favorable (and typically overoptimistic) outcome to one's plans until it is certain to occur.