•to have eyes bigger than one's stomach (to take more food on one's plate than one can eat) · to bite off more than one can chew (to try to do too much; to take on or attempt more than one is capable of doing)
to be mindful of one's surroundings and circumstances to choose the right options
köken: Literally, “to consider the amount of rice one has in order to pick the right amount of sidedish”. Compare English don't bite off more than one can chew, German Man muss sich nach der Decke strecken.