When Jana was chiding herself for losing her favorite necklace and reciting a list of all the things she could have done to prevent the loss, her grandmother said, "Now, Jana. Don’t cry over spilled milk." In essence, Jana’s grandmother was advising her to .

stop engaging in counterfactual thinking

Explanation:

her grandmother advise her stop engaging in counterfactual thinking as  counterfactual thinking refer to think alternatives rather than to accept reality, in simple in such thinking human think alternatives about already held circumstances and past situations and events.  To think opposite than actually happened events , in simple deny reality.

a) they had recently endured the tyranny of the british king, parliament, and its royal

answer; the sound of a train whistle makes a woman think of an old friend; //

the smell of grass makes a by feel that spring is the best; (apex);