Last week I achieved something. Something I'd been working towards for weeks and I finally did it.

But then after a very short moment — basically 5 minutes — of feeling accomplished, my brain was ready to move onto the next task. The win slipped into ancient history territory before I finished my drink.

But then yesterday I got an email from myself, sent using this service, reminding me that I did it.

That email was the best thing I received all day, and actually got me fired up and excited to tackle a new challenge. Not because it contained anything remarkable — but because it reminded me of how good I felt when I did it. The other crazy thing was that it reminded me that the win that felt like it was months ago was literally only a week ago.

There's a Name for This

What I experienced has a name, especially in the ADHD and psychology world: success amnesia.

It's the pattern where you accomplish something, experience a brief moment of satisfaction, and then almost immediately move on. So completely that the achievement fades from your working memory before it's had any real chance to land. A week, a month later, you're back to feeling like you haven't done enough, haven't made progress, aren't where you want to be.

And you genuinely don't remember that you have. Not clearly.

Success amnesia affects a lot of people, but it's especially common if you:

• Have ADHD, where time blindness makes the recent past feel much further away than it is
• Are a natural overthinker, where your brain is always scanning for problems rather than resting on what's already done
• Move quickly through life, jumping from one thing to the next without much pause
• Tend towards perfectionism, where the next challenge already looms larger than the last achievement
• Struggle with imposter syndrome, where accomplishments feel undeserved or temporary even when they're not

The world doesn't help. Everything moves fast now. There's always a new thing to respond to, a new goal to set, a new metric to chase. The idea of pausing to sit with something you achieved — just to feel it properly — can feel almost indulgent. So most people don't. They keep moving.

And the wins disappear.

Why Your Brain Doesn't Hold Onto the Good Stuff

There's a reason this happens, and it's not a personal failing. It's your brain working exactly as designed — just not in your favour.

The human brain has a well-documented negativity bias: it registers threats, failures, and problems more strongly than successes and positive experiences. From an evolutionary standpoint, this made sense — remembering dangers kept you alive. But it means that unless you actively anchor good moments in memory, they tend to fade much faster than the difficult ones.

A bad performance review stays with you for weeks. A great one gets filed away by the end of the day.

A mistake you made in a meeting might replay in your head for days. The presentation that actually went well? By Thursday you've moved on.

Your wins need more help than your losses to stick around. And most of us never give them any help at all.

The Time Distortion Effect

There's something specific about that email I received — beyond just reminding me of what I'd done. It came with a timestamp.

I'd sent it to myself seven days earlier. And when I read it, my gut feeling was that it had happened much longer ago than that. It felt like weeks, maybe more. That gap between what I knew intellectually (it was one week) and what I felt emotionally (it was ancient history) was striking.

This is the time distortion that comes with moving quickly. When you're always in motion — always looking forward, always onto the next thing — your sense of the recent past gets compressed. Last week's wins get pushed to the back of your memory not because they weren't real, but because your attention has already moved so far ahead.

The email didn't just remind me what I'd done. It reminded me when — and that reframe changed everything. It's only been a week. Seven days ago I was in the middle of something hard and I came through it. And here I am, still going, already forgetting, already setting the next bar higher.

A Simple Way to Catch Yourself Forgetting

What I did wasn't complicated. The day something went well — a win, a breakthrough, a moment I wanted to hold onto — I wrote myself a short message about it. Just a few sentences. I sent it to myself, scheduled to arrive one week later.

That was it.

"It's been one week since you launched PROJECTNAME. Just a reminder that you are awesome, hope you are having a great day."

A week later, it arrived. And seeing that little alert come up on my phone I felt genuinely proud. It was like it portalled me back in time to how I felt when I did the actual thing. I couldn't believe it was only a week ago, and it made me realise how often I do this — forgetting wins because we're all so busy moving onto the next thing.

This wasn't what I designed Letter to My Future Self for, but it's become one of my favourite ways of using it. In less than 2 minutes I can create a reminder that feels genuine — not like a task, but like a nudge to stop, remember, and appreciate something I actually achieved.

Who This Is For

This isn't a grand productivity system. It's not a habit tracker or a journal practice or anything that requires consistency to be valuable. It's a one-off thing you do in a good moment, that comes back to you when you need it.

But it's especially useful if you recognise yourself in any of these:

If you have ADHD: Time blindness is real, and it works in both directions. Just as the future can feel abstract and far away, the recent past can feel more distant than it is. A note from one week ago that arrives in your inbox anchors a memory to a specific point in time — something your brain finds hard to do on its own.

If you're an overthinker: You're probably better at cataloguing what went wrong than what went right. Your wins need deliberate attention to stick around, because your brain will naturally spend more time on the problems. This gives them a fighting chance.

If you move fast: The faster you move through life, the more quickly good moments get buried under new ones. This creates a small, intentional pause — not in the moment (because you'll keep moving), but a week later, when the moment returns to you.

If you struggle with imposter syndrome: The specific cruelty of imposter syndrome is that it erases the evidence of your own competence. You can't remember your wins when you're in the grip of it, because they've faded. A note from one week ago — written in a moment when you did the thing and knew it — is harder to argue with than a vague feeling you try to conjure from memory.

What to Write

You don't need much. The simpler the better.

Write about the thing that happened. What it was. Why it mattered. How it felt in the moment — not the polished version, the real one. Were you relieved? Surprised at yourself? Did you feel a flash of pride before immediately thinking about what came next?

Write that down. Send it in a week.

A few prompts to get you started:

• "Today I [thing that went well]. I want future-me to remember that this happened, because I know I'll have already moved on."
• "I was nervous about [x] and I did it anyway. Here's what it felt like when it worked."
• "I solved something hard today. By the time this arrives, I'll probably have forgotten. So: good job. You figured it out."
• "This week I [achievement]. It felt [feeling]. I'm sending this now because I know I won't give myself credit for it later."
• "Right now I feel [feeling]. Save this for next week."

The Bigger Point

There's a version of self-improvement that's entirely focused on getting better, moving forward, achieving more. And there's a cost to living entirely in that mode: you stop being able to see how far you've come, because you're always looking at how far you still have to go.

Not every win needs a celebration. Not every good moment needs to be marked with a ceremony. But some of them deserve more than five seconds of satisfaction before your brain moves on to the next problem.

A short message to yourself — arriving one week later, just when you've forgotten — is a small way of insisting that the good things happened. That they were real. That you did them. That it was only last week, even though it already feels like forever ago.

The world is moving fast. It's okay to leave yourself a note.

For more on using letters to your future self as a regular habit, see Weekly Check-Ins With Your Future Self — a simple practice that takes two minutes a week.

Or, if you want to write a more detailed letter to your future self, our complete guide is here: How to Write a Letter to Your Future Self.