Цыплят по осени считают

You should never be prematurely sure of being successful till you know the result See Медведя не убив, шкуры не продавай (M), Не говори "гон", пока не перескочишь (H), Не поймав, не щиплют (H), Не считай утят, пока не вылупились (H), Не то зерно, что в поле, а то, что в амбаре (H)

Cf: Catch the fish before you fry it (Br.). Count not four, except you have them in the wallet (till they be in the bag) (Br.). Do not boast of a thing until it is done (Br.). Do not fish in front of a net (Am.). Don't clean your fish before you catch it (Am.). Don't count your chickens before they are hatched (Am., Br.). Don't eat the calf in the ow's belly (Br.). Draw your salary before spending it (Am.). First catch your hare (Am., Br.). First catch your hare, then cook him (Br.). First catch your hare, then cook it (Am.). First catch your rabbit and then make the stew (Am.). It is ill fishing before the net (Br.). It is ill prizing of green barley (Br.). Make not your sauce till you have caught your fish (Am.). Never spend your money before you have it (Am., Br.)