Write Letters To The Person You're Becoming
The best thing Seneca wrote wasn’t a treatise. It was a long run of letters to a younger friend named Lucilius — over a hundred of them — where he worked out his philosophy not as doctrine but as one guy trying, in real time, to figure out how to live, and handing what he found to someone he cared about. The form matters as much as the content. He didn’t lecture from some finished height. He thought out loud, on the page, aimed at a specific human being.
Writing things down for an imagined reader is one of the highest-leverage habits a builder can have, and not for the usual reasons. The standard pitch is “build an audience, market yourself.” Real, but downstream. The actual value is that writing for someone forces a clarity you can’t fake. You can hold a fuzzy idea in your head forever and never notice it’s fuzzy. The moment you have to explain it to a friend on a page, the fuzz becomes visible, and you find out whether you understood the thing or just felt like you did.
This is why the engineers and founders who write are quietly compounding something the others aren’t. Seneca was figuring out his own life by explaining it to Lucilius — the writing wasn’t a report on conclusions he’d reached, it was the instrument he reached them with. When you write to clarify instead of to perform, the reader is a forcing function, a pretext to make your own thinking honest. Half of what I actually understand, I only understood once I tried to say it cleanly to someone else.
There’s a second thing in the letters that’s more personal. He’s often really writing to himself — the older steadier self instructing the part that’s still anxious, still ambitious, still tempted. Lucilius is partly a real friend and partly a stand-in for the person Seneca is trying to become. The letters pull him toward that person sentence by sentence, by articulating what the better version would already know.
I do a version of this and it’s the only journaling that’s ever stuck. Not a feelings diary, letters — to a friend, to my future self, to whoever reads it later. Here’s what I’m figuring out. Here’s the thing I keep getting wrong. Here’s what I think is actually true. Addressing a reader, even an imaginary one, drags the thinking out of the warm fog where it stays vague and into the cold air where it has to either hold up or break.
So if you build things, write about building them. Not to perform expertise you may not have. To find out what you actually know, to clarify the thing by explaining it, and to stay honest by saying it to someone other than the voice in your head that lets everything slide. Seneca built a whole philosophy this way, one letter at a time, addressed to a friend who was also partly himself.
Write to clarify. Address it to someone. You’ll find out what you actually think.
One of a series of essays. I’m Prajjwal Chittori. prajjwalchittori.com.