15 August 2026 · 4 min read

I kept everything I learned to myself. It paid nothing.

In February 2024 I wrote a note telling myself to start publishing. I then did not publish anything for two and a half years. Here is what the delay cost, and why the notebook it was written in is now the thing I publish from.

February 2024:

At 1st, I thought It would be the best to gain knowledge and only keep it to Myself. Little did I know that this doesn't bring me much benefit, but if I start my personal Branding earlier, I could gain lots of benefits — Not only It brings me an alternative source of income, but also gives you a huge advantage in making a choice by partners, employers and people — as you give them a source to trust. and you also gain followers who can help you as well. So Start today — TikTok and Youtube — Just do it and never regret!

Lucas on stage with a microphone at a Wildcats event

"Start today."

I started thirty months later.

What the delay actually cost

Not followers. I don't especially want followers.

What it cost is the thing the note names precisely: a source to trust. In those thirty months I built real systems for real businesses — an order and customer system a Da Nang shop runs on daily, a voice-driven game, event tooling for hundreds of students. All of it existed. None of it was visible.

Every conversation about work therefore started from zero, with me describing things instead of showing them. The work was the same. The evidence was in private repositories and other people's dashboards.

The gap between having done the work and being able to show the work is a real gap, and it doesn't close by itself. It closes by publishing, which is the one thing the note told me to do.

Why the excuse held for so long

Because publishing felt like marketing, and marketing felt like the opposite of building.

That was a comfortable belief. It let me spend two years on the part I enjoy — and it is also the exact belief the note was arguing against. I had already refuted it, in my own handwriting, and then ignored the refutation for two and a half years. Knowing the answer and using it are different skills.

There's a second note, from April 2024, about Solomon's paradox: you can be a master of counselling other people's problem, but are terrible at dealing with your own problem. I have been living a case study.

What I'm publishing instead

Not TikTok. I got that part wrong for me, and being wrong about the channel is a bad reason to skip the decade.

What I have is better: a paper notebook I have kept since February 2024. Sixty-two entries, one hundred and nineteen handwritten pages, dated, unedited, mostly written before I knew whether any of it was right.

So this series is not "here are my ten lessons about business". It's older and more specific than that: here is what I thought on a Tuesday in 2024, in the exact words I used, and here is what two years of building since has confirmed or broken.

Some of it aged well. The note about giving people the rod instead of the fish is now how I hand over software. Some of it aged badly, and I'd rather show that than quietly delete it.

The one line I'd send back

If I could put one line in front of the version of me holding that pen in February 2024, it wouldn't be advice about platforms.

It would be: the notebook is already the asset. You are two years from noticing.


This is post five of five, from a handwritten notebook kept since 2024 — transcribed word for word, nothing rewritten to sound wiser than it was.

If this sounds like your problem, say so in one paragraph.