tomorrow will take care of itself; let the morn come and the meat with it; (lit.) tomorrow, the winds of tomorrow will blow
children's game of throwing a shoe up in the air and seeing how it falls to predict whether it will rain or not the following day
tomorrow is another day; there's always tomorrow
never put off until tomorrow what you can do today; (lit.) (he who says) 'let's do it tomorrow' is a moron