Writing a letter to your future self, and why it works.

There is a version of you who will open a note three months from now, on a Tuesday you cannot picture yet. They will have had a hundred days you have not had. Some of what worries you today will have resolved itself, some of it will have turned into something else, and a few things you barely notice right now will turn out to have mattered. Writing to that person is an old habit, older than the internet services that made it a small genre, and it is one of the few rituals where the research and the folk wisdom agree.

The stranger you will become

The psychologist Hal Hershfield has spent years studying a simple question: how much does the future you feel like you? His answer is that, for most of us, not very much. In brain-imaging work, people thinking about themselves ten years on showed activity patterns closer to those they showed when thinking about a stranger than when thinking about themselves today. He called the sense of overlap between present and future self future self-continuity, and found that people who feel more of it save more, procrastinate less and make decisions their later selves are glad of. The weaker the connection, the easier it is to hand tomorrow's person a bill today.

You are not being careless with your future. You are being careless with a stranger.

What the studies found

If the problem is distance, a letter is an obvious tool, and it has been tested. In 2018 Hershfield and colleagues asked people to write a letter to themselves either three months or twenty years ahead. Those who wrote to the distant self reported feeling closer to that self afterwards, and, in the days that followed, exercised more. It was not a dramatic change, and the authors are careful to say so, but it came from a single short piece of writing, with no reminders and no coaching.

A second line of work comes from Yuta Chishima and Anne Wilson, who built a two-part exercise for students: write a letter to your future self, then, a few days later, write the reply your future self would send back. Compared with students who only wrote the first letter, those who completed the exchange felt more continuous with who they would become, and reported thinking more about their careers and studies in concrete terms. During the first year of the pandemic the same team found that a brief letter-exchange eased negative feelings in the moment, which matches what most people notice when they try it: the mood lifts a little as soon as the pen stops.

How to pick the date

People reach for round numbers, and ten years feels like the proper distance for something this sincere. It is usually too far. A decade-away self is the stranger Hershfield describes, and the letter tends to fill with weather rather than with anything either of you can use. Three months is enough. It is close enough that you can picture the season and far enough that the present will have shifted. A year works too, especially around a birthday or a move. If you are unsure, choose the nearer date, because a letter that actually gets read beats a grander one that turns into an artefact.

What to write

Three things, in roughly this order. First, what is true now: the plain facts of your days, what you are worried about, what is going well, who is around. Future you will have forgotten the texture of this week faster than you expect, and this is the part they will read twice. Second, what you hope. Not a list of targets, but the few things you would be quietly relieved to find still true, or finally true. Third, one question. A single honest question gives your future self something to answer rather than just something to read, and it is the part that most often changes what you do between now and then.

What is true now, what you hope, and one question. Everything else is optional.

Eight prompts to start from

Why sealing it matters

It is tempting to keep the letter somewhere you can see it. Resist that. A note you can reread becomes a note you edit, and the editing quietly removes the embarrassing, specific, useful parts. Sealing it does two things. It lets you write honestly, because nobody, including you, will see it tomorrow. And it turns the opening into an event, a fixed point in the future that you have already made an appointment with. That appointment is a small piece of continuity in itself.

Luvia's note to your future self does exactly this: you write, you choose the date, and the note stays sealed until that day arrives. It sits alongside the meditation timer and WOOP in the rituals, and like everything in the app it is private to you by design, which you can read about in how Luvia handles your data. Paper and an envelope in a drawer work just as well, as long as you do not open the drawer.

The kinder reading

The research on future self-continuity is often summarised as a warning: you undervalue your future self, so fix it. The letter suggests a softer reading. You are not bad at caring about the future; you are bad at caring about people you have never met. Write to them once, with the facts and a hope and a question, and seal it. When the date comes, you will find that the person reading is not a stranger after all, and that they are, on the whole, pleased you wrote.