Let me start with a dislcaimer : I do not know shite from shinola about getting ones shite together.
But maybe take one problem at a time, after a few really deep breaths.
I'd suggest the essay first, this post had to be at least a few hundred so words will come, is there a specific topic? a creative writing assignment ? passions can help the words flow
Packing shouldn't be too hard unless you are planning to do some shopping, if not everything you will take is there, yes?
Cancelling the trip, if need be, isn't impossible, would certainly be difficult, but not impossible.
Handling the future of your relationship probably can't be solved today, not sure if it needs to be, but refer to the disclaimer
You quit ten days ago , so that is done, no need or good could come from starting again, yeah?
I'd start with the essay , wish you well , oh yeah dont forget the deep breaths
