I used ChatGPT to build a personal operating system using a single prompt — now I can't imagine working without it
The custom OS that pushes me to approach my tasks differently
Ever since I discovered the benefits of working with AI tools, I’ve explored all sorts of avenues to find its most constructive uses.
From a productivity standpoint, I’ve noticed boosts in that area thanks to ChatGPT’s helpful suggestions on how to improve my workflow, dodge/eliminate all the distractions that dare to disrupt it and get a better handle on my mental health by using different routines to balance my work/personal life. Besides that essential usage of chatbots, I’ve also gotten plenty of good to great uses out of ChatGPT, Gemini, Claude and Perplexity for deep research, recipe ideation, media recommendations, travel planning and everything in between.
Making ChatGPT function like a personal operating system is a recent experiment that popped into my head when trying to find another avenue toward boosting my efficiency and optimizing my work-life balance.
The result of this latest ChatGPT test saw OpenAI’s tool give me the perfect prompt that transforms it into my dependable operating system, which gave me the advice I needed to work more effectively.
The perfect prompt for building my own operating system
Once I asked ChatGPT to generate some prompts that switch its identity from a chatbot that doubles as my everyday search engine to my personal operating system, there was one option from its list of ideas that stood out the most. This one is called the “CEO Operating System” prompt:
Become my personal performance analyst.
Review everything I accomplished and think like a coach, psychologist, business strategist, and systems engineer.
Get instant access to breaking news, the hottest reviews, great deals and helpful tips.
Tell me:
What worked exceptionally well.
What created unnecessary friction.
Where I wasted time.
What patterns you notice.
Decisions I should repeat.
Decisions I should stop making.
One habit to build.
One habit to eliminate.
The smallest change that would create the biggest improvement over the next month.
Taking note of my personal operating system’s compliments and workflow recommendations
Since I’ve been interacting with ChatGPT since 2025, it’s made a mental note of all the requests I ask of it, the overarching theme behind the prompts I ask it to generate, the kind of decision-making I ask its assistance for and a whole lot more.
With all those defining factors in mind, it gave me a performance review from the four different perspectives I tasked it with adopting for this experiment. And in the process, it built an operating system for me that showcased my celebratory triumphs, areas of my workflow with the most friction attached to them, biggest wastes of time and a slew of other observations that forced me to adjust my daily habits.
The areas of advice that caught my attention the most were “Decisions you should repeat”, “One habit to build,” “One habit to eliminate” and “The smallest change with the biggest payoff.”
The decisions ChatGPT told me to continually incorporate into my daily workflow are:
- Replacing doomscrolling with scheduled news summaries.
- Building repeatable AI workflows instead of one-off prompts.
- Prioritizing high-impact work before administrative tasks.
- Studying why content succeeds instead of copying it.
- Turning every successful workflow into a reusable template.
The single habit it told me to make a part of my workday is ending it with a 10-minute operating review. Once I wrap up a work session, I ask myself the following four questions that ChatGPT presented me with for this useful exercise:
- What created the most value today?
- What slowed me down?
- What should become a reusable system?
- What's tomorrow's first task?
On the topic of the habit I should get rid of entirely, ChatGPT told me to “stop searching for the perfect point.” And by that it meant to begin with a good version of whatever I’m using (such as a prompt or workflow routine), and keep polishing it over time to match my changing needs.
And finally, ChatGPT told me I should develop a “Personal AI Playbook.” It stated that, instead of producing and saving dozens of disconnected prompts for several tasks, I should create and maintain a sole document with a singular prompt for the things that matter most to me, such as:
- Morning planning
- News summarization
- Performance reviews
- Decision-making
- Editing checklists
- Personal operating system
ChatGPT further stated that, after a month of doing this, I’d get into the habit of producing a refined operating manual tailored to my work style with a sole prompt that covers each area of my professional duties. It also noted that this one change can reduce decision fatigue, make my workflows easier to approach and free more time for the actions that matter most: researching, writing and publishing high-quality stories.
Final thoughts
With so much of my time spent with ChatGPT, its consistent memory has proven to be a big help, as it remembered all of our interactions and used them to build an operating system that caters to my everyday wants and needs.
I’ll be sure to reuse that same personal operating system prompt every few months or so to see what changes it observes from our chats and what new recommendations it serves me to help me excel at my daily obligations. Depending on what you do for a living or how you move through your personal life, ChatGPT will take note of it and serve you well as your new personal operating system with a prompt meant to maximize your daily output.
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More from Tom’s Guide
- I stopped doomscrolling for 48 Hours and let ChatGPT do the catching up — and it worked much better than expected
- I tried the 'Marshmallow Prompt' — and it completely fixes ChatGPT's most annoying habit
- I tried ChatGPT’s 2023 ‘Caveman Prompt’— here is the one thing it still does better than most prompts

Elton Jones covers AI for Tom’s Guide, and tests all the latest models, from ChatGPT to Gemini to Claude to see which tools perform best — and how they can improve everyday productivity.
He is also an experienced tech writer who has covered video games, mobile devices, headsets, and now artificial intelligence for over a decade. Since 2011, his work has appeared in publications including The Christian Post, Complex, TechRadar, Heavy, and ONE37pm, with a focus on clear, practical analysis.
Today, Elton focuses on making AI more accessible by breaking down complex topics into useful, easy-to-understand insights for a wide range of readers.
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