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LIFETIME BLUEPRINT

How Do I Write a Letter to My Child They Will Read as an Adult?

By Joshua S. Brogley · August 17, 2026

Part of the series Letters Forward: The Eleven Letters Everyone Should Write

Write it to the adult, not the child. Date it. Tell them what you were like at the age they will be when they read it, what you were afraid of, what you got wrong, and what you hope for them specifically. Then put it somewhere that will still exist in twenty years. Lifetime Blueprint has this letter built in, with prompts to consider, and keeps it in the same book as the record of your life, so the letter is delivered by the book itself.

Write to who they will be

A letter to a five-year-old is sweet and gets outgrown. A letter to the thirty-year-old that five-year-old becomes is kept forever. Picture the adult, and write to them.

Tell them about you at their age

This is the part only you can give: what you were doing, wanting, and afraid of at the age they will be when they read it. It hands them a mirror across time, and it is the single most valuable thing in the letter.

Name what you hope, and what you saw

What you hope for them, specifically, and what you noticed in them early that they may not have noticed themselves. Those two paragraphs get read at weddings and funerals. Write them plainly.

Keep it where it will be found

A letter in a drawer is a coin toss. A letter inside the book that also holds your life’s record, alongside the letter to their future children and your Final Letter, gets delivered. That is why the Blueprint keeps the letters in the same binding as the decades. Related: the letter to your future self.

Lifetime Blueprint

A guided journal built for the long arc of a life: eight domains, seven decades, twelve snapshots, eleven letters, one record honest enough to be inherited.

Buy it on Amazon See the book

What should I say in a letter to my child?

The things you would want to know from your own parent: what they were like at your age, what they regretted, what they were proud of, and what they saw in you that you could not see yet. Specific beats profound.

When should my child read the letter?

You decide, and the Blueprint gives it a slot: at a milestone, at an age, or after you are gone. Because it lives inside the journal, it does not get lost in a drawer.

written by the author, at the kitchen table, after work.