Tips for essay that gives the ending / more to story telling or knows as narative essays are...
-To let it become very real, as if the reader is the one who experience the situation
-NEVER A BORING ONE. For example, if the ending is about a girl crying, don't make it about death/ loss of anything or anyone. Cliche.
-Have a very unexpected story & plot twist ending
Back to the question.
The Q is an open Q because it can be about, anything!
-Write about an imaginary friend, in your childhood and the ending is about the last time she came & you grew up already and have REAL friends. So she left and closed the door.
-Your mother loves you, cooks for you, advises you, do everything a mother do, but the ending goes with your mother had left you alone since you were little but you're like.... oblivious to the facts. Until one night you were randomly looking through (anything that says your mother is dead) then your mother came in your room then blabla then she left.
Sorry if it's a bit spooky/ my eng is terrible. Hope to help, atb!