it's one of those two things; there are two possibilities, there are two possible scenarios; you have two options; you choose(: either ... or)

that's the least one can do, it's nothing at all

to take things as they come, to take the rough with the smooth

state of affairs, situation

(informal) to get down to business, to get down to brass tacks, to get down to the nitty-gritty

by force of circumstances, inevitably

to think big

all good things come to an end

to look on the bright side; to count one's blessings

all things being equal, all else being equal, ceteris paribus