[Episode 1] The Fateful 5 Minutes - A 40-Something's 6 AM Decision

It was the morning of January 10th. At 6:00 AM, it was still completely dark outside my window.

While relaxing and watching YouTube as usual, a video titled "New Year's Career Fortune Telling with a Gemini Prompt" caught my eye. I tried it out of simple curiosity, but the insights provided by the AI went far beyond mere "fortune telling."

"In an era of 100-year lifespans, how should a person in their mid-40s prepare for the future?"

The AI's response to this earnest question was so profound that it deeply moved me. At the same time, a strong desire welled up inside me.

"I don't want to keep this experience to myself. Can I create a 'place' where more people can access these deep insights?"

At that moment, a phrase I had heard somewhere before, "Ideas disappear if you don't start acting on them within 5 minutes" , crossed my mind. This was no time to be lying in bed thinking. Without hesitation, I opened my PC and faced the Gemini screen.

The First Step Wasn't "Development"

Even though I decided to build a service, the very first action I took in those 5 minutes wasn't programming or complicated development planning. It was "solidifying instructions (prompts) for the AI."

Me: "Set up this fortune-telling prompt so that it can be used repeatedly in Gems (a custom version of Gemini)."

Gemini instantly understood my intention, put together a brilliant structure, and replied like this:

Gemini: "Certainly. I will organize the structure of this prompt and optimize it as 'Instructions' for a Gem. Now you will be able to get career diagnoses tailored to your intentions at any time. Let's set it up."

This was the moment all the gears started turning for what would become a one-month sprint alongside AI.

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🍳 [Today's AI Development Recipe] Create Your Own Personal AI Assistant "Gem"

• Technical Difficulty: ⭐☆☆☆☆ (You can do this right now even with zero IT knowledge!)

This time, instead of "programming," we used the magic of making the AI remember the role you want it to play .

1. What are Gems?

It's exhausting to type instructions from scratch every time like, "You are an excellent fortune teller. Please follow these steps..." Gems is a feature that allows you to create your own custom AI by pre-memorizing these "prerequisites" and "personalities." (*Available in Gemini Advanced, etc.)

2. How did I do it?

Instead of writing complex settings myself, I took the approach of having the AI itself write the instruction manual . Continuing from a chat that gave a great answer, you simply ask, "Based on our current interaction, please create a setting document for a Gem so that I can do the same fortune telling anytime."

3. To Our Readers

If you are using an AI and think, "Wow, that was a great answer," try asking it to "Turn the current settings into a document to save" before closing the screen. That will become the "seed" for your very own service!

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Preview: The Turning Gears and the Price of Magic

Within 5 minutes of having an idea, I completed my "personal fortune-telling AI." However, the dialogue with the AI accelerated at an unbelievable speed from here. From a state of "Servers? Domains? What are those?", the service was released to the world within 24 hours .

But behind this magically automated development lay a terrifying trap. "All I did was change the color of a button slightly..." What is the horror of bleeding money that I would only learn about later?

Next time, [Episode 2] A Furious 24 Hours and the Trap of Magical Tools. Look forward to it!