The order matters because each step captures something the previous one can't: objects before words, words before predictions. A photo taken after you've started collecting is already a selection. Gather the ordinary evidence first, then seal it before you can revise.
Step 1: Photograph the room you stop seeing
This comes first because it is the only thing you can capture before the project starts changing how you look at your own life. Once you begin collecting, you start noticing and selecting, and the unedited baseline is gone. So photograph the room as it is right now: from the doorway, at eye level, with the normal lens on your phone, lamp on if the light is dim. Leave the dishes in the sink, the cables on the floor, the laundry on the chair. A Tuesday at 7pm is perfect. The people who ruin this step are the ones who tidy first. A capsule holding a cleaned-up room records a version of your life that never actually existed on an ordinary day.
Step 2: Save one piece of everyday paper
Paper is the layer a photo can't reach. Prices, store names, and printed dates locate you in time more precisely than anything you could write, which is why this step sits next to the photograph rather than later. Pick something you would throw away inside a day: a grocery receipt with today's total, a transit ticket, a takeout menu with prices. Flatten it in a book so it doesn't crease, and if the origin isn't obvious, write one line on the back — where you were, what you bought. What most people get wrong here is choosing something meaningful. A concert stub is already a memory; the receipt for milk, dish soap, and a sad Tuesday sandwich is the actual texture of this year.
Step 3: Write down the job you have now
Now that you have objects, add the thing objects can't show: how the days actually felt. Nobody documents an unremarkable job while they're in it, and in three years you will not be able to reconstruct the commute, the lunch, the specific boredom. Write two hundred words without a résumé voice. Skip 'managed stakeholder relationships' and write 'I answer email until 10, standup at 10:15, eat a sandwich at my desk, spend the afternoon in a spreadsheet I don't understand.' Include your hours, your commute, what you wear, what you complain about on the way home. The common shortcut is writing about the job you want next instead of the one you have. Future you already knows your ambitions; what's unrecoverable is the ordinary Wednesday.
Step 4: Name five things you're into right now
Three kinds of record are now in the capsule: what things looked like, what they cost, and what you did all day. This step adds taste, which shifts faster than any of them and is almost impossible to recall accurately. List five specifics rather than categories. Not 'podcasts' but the one about the two brothers who fix old houses; not 'Thai food' but the noodle place two blocks over with the cracked plastic chairs. Write at least one entry you'd be slightly embarrassed to show someone, because that's the one that will land hardest next year. The quiet failure here is listing what you think is good — the album you've been meaning to finish — rather than what's actually on repeat. Your real taste is what your hands reach for without deciding.
Step 5: Write one hope and one worry
After four steps of description, you've earned the right to predict. A guess made before you gathered the photo and the receipt is just a mood; made after, it's anchored to an actual Tuesday. Write one hope and one worry, both specific enough to be checked. Not 'be happier' but 'still be in this apartment and not dreading Sunday nights.' Not 'money' but 'have six weeks of expenses saved.' Keep both short — two or three sentences each — and don't soften the worry into a humblebrag. The usual slip is writing the hope you think you're supposed to have, the promotion or the move, instead of the one that surfaces when you can't sleep. Write the unsanitized version. In twelve months the gap between these two lines and reality is the most interesting thing in the envelope.
Step 6: Seal it and set the date
Sealing is not decoration. If you can open the box in March, you will, and each peek dulls the comparison you're paying for. So make it genuinely closed: an envelope taped across the flap with the open date written over the tape, or a folder zipped and passworded with the password written somewhere you'll find it in a year. Store it somewhere inconvenient but not forgotten — a high shelf, a box in a closet, not the desk drawer. Then set the reminder on a calendar you expect to still use, dated exactly twelve months out, and put a paper note somewhere visible as backup. A capsule 'sealed' in a drawer stays sealed for about three weeks. The only reason this works is that you can't check.
A phone reminder vanishes the instant you dismiss it and leaves nothing behind; a paper strip taped where you'll actually see it gets visibly shorter and stays there until you finish. Twelve months from now the envelope is the only version of today that wasn't written from memory. Open it on the date, not the nearest convenient weekend.