Mahjong's Diary

I am documenting that journey until the moment of complete independence.
6 books, over 500 YouTube videos, 1,000 posts, and a newsletter I've been writing for 3 years…
I record content for a simple and independent life every day.

I was a successful global marketing strategist.

I was a successful global marketing executive. I traveled business class to meet CEOs around the world. However, I wasn't happy at all. I was someone who always wore other people's clothes and poked around here and there.
Wandering People Are Special, Writer Ma

Watch the most popular YouTube videos

Mahjakga's YouTube channel, with 5,800 members. Watch the most popular series by topic.
– The Second Act of Life and Aging as the Protagonist
– Resignation and Career Concerns
– Startups and Revenue Pipelines
– Self-management and time management
– Writing a Book and Building a Personal Brand

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Mahjakga's 6th book,
2025 New Release “What is Impeachment?”

“The presidential impeachment, the news was abuzz, but… we are missing what is truly important!”
The real knowledge missed by news headlines, 'bite-sized' humanities!

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Ongoing recruitment

So that you, who cannot hide your creator DNA, can discover your true talent!
Verify that DNA through an internship. It's okay even if you have multiple jobs!
And let's talk about the future of life together.

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You, who cannot hide your creator DNA, are a designer.
Would you like to unleash your talents at a startup with a strong work-life balance and grow the business with me?

Latest Posts – I try to write every day

My AI Diary – A Writer-turned-Entrepreneur Living Like a Developer

It feels like my life has changed since I was introduced to Cursor late last year. I knew that artificial intelligence was changing the world, yet there wasn't much I could do. Through Cursor, I entered the world of coding and got completely absorbed. Late-blooming elderly students who started learning Hangul...

April 19, 2026April 19, 2026

It keeps changing, but who that me is

As someone who loves books, I have heard that the question of who I am can be futile. Nevertheless, I am of the belief that I must know who I am. It involves a mixture of a priori logic and experience. Who I am changes depending on my environment and what I desire within it, but nevertheless, I continue…

February 23, 2026

The Usefulness of Gloomy Days

January 11, 2026. Sunday reflections of Ma-jakga, entrepreneur and CEO. From the essence of business models grappling with declining sales and market stagnation, to preparing for TIPS investment and sustainable growth strategies, the meaning of the service industry learned through communication with writers, questions regarding organizational capabilities, and even the necessity of personal restraint. Gloomy…

January 11, 2026January 11, 2026

We will take on the challenge again in 2026.

December 31, 2025. As I wrap up the past year, I think about the next. What kind of year should 2026 be? I hope it will be a year where the beginnings of the past year take root and new branches sprout. Four Roles. I live four roles. Creator, entrepreneur, CEO, and head of the household. For each role…

January 4, 2026January 4, 2026

Mahjakga's Top 10 News of 2025: A Year of Unceasing Attempts

2025, the Year of New Beginnings. The year is drawing to a close. 2025. Strangely enough, it was a year that felt fittingly "news." Rather than major events, it was a time when small yet distinct changes accumulated densely. Yonsei University Advanced Management Program (AMP), my sixth book, an app built with VIVE Coding, parting ways with BMW, ketogenic diet, tennis, lessons from Simplet Q...

January 3, 2026January 4, 2026

Life Experiment (feat. Wish Company CEO Park Seong-ho)

The Recipe for Success. People often say there is a recipe for success. We assume that behind the achievements of others, there must have been a meticulous strategy or perfect timing. I used to think so too. However, after meeting a few successful people, my perspective changed significantly. They had no strategy. They simply had 'experiments.' Crossing the safety line is going against instinct…

December 7, 2025December 7, 2025

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Introduction to Author Ma and Books Written

I am becoming a freer and more independent person.

I was a successful Global Marketing Officer. Starbucks wrote a royalty model contract with Seattle when it entered Korea in the early days. In my late 30s, as the general manager of a brand, I flew business class to Europe and the Americas to meet CEOs. But I wasn't happy at all. He was a person who always wore other people's clothes and snooped here and there.

I wanted to leave a stable path and prove myself by using myself as a test. I wanted to show that anyone can find their field and make money from it. I think you need these three things to be a free and independent person. One. the path given to you2. to help others with it, profits in the process 3. Growing my supporters through all of this meaning of lifeI am creating content for such a simple and independent life. Books after resignation / independence <Those who wander are special> and 5 bookswrote. 5.6k people on YouTube We are communicating with our subscribers. We have established a limited company for artists and are growing through various initiatives. We are an official Google AGT sponsoring company and a trending content enterprise selected by Kyobo Book Centre. We are expanding into book and album releases, as well as artist networking businesses. Innate INFJHowever, when it comes to work, I am an ENTJ. I was born in Gangwon-do. I attended high school by the sea and college in downtown Seoul. I currently live between Gyeonggi-do and Gangwon-do. I am a father of two children. I am a CEO supporting a family of seven. I have published five books and am striving to publish even more in the future. I want to be remembered as a tenacious writer. I want to be remembered as a writer who wrote books until the day I die. I want to provide more help to artists and those who are lost. To do so, I want to grow my company into a more solid and substantial enterprise. There is something important to me. I want to document this process on YouTube and my blog, and continue to share it with those who share similar concerns.

This blog is about my journey to fuller independence.

Watching the YouTube video, I was thrilled that there were adults like this, so I watched it as a fan.
Podcast DJ & Blogger Oniwini

Click to go to Naver's official profile of Mahjongga

Clicking will take you to the official Naver book introduction page.

A rather long post I wrote on my Naver blog (2021) 👉 Mahjongga, The Path I Have Walked

There is a reason why I decided (?) to become a fan of the author. Usually, when I see people who give lectures or consult, I feel like a bit of a 'man'.
blogger sky

Within 1 minute on the page you go to after clicking **barYou can get free data from** 1) The field that I feel happy to know like MBTI! 2) Business system YouTube live real-time notes made in 100 days 3) Mahjongga talk concert sharing summary notes + and will be updated continuously.

Majakga YouTube Channel

Wow ~ 44 years old This is a very helpful video in the most critical period of life. I think I can build my low self-esteem well.
youtuber go eun sil

Lately, I’ve been wanting to quit my job, so I was browsing YouTube using the keyword "resignation," and out of all those videos, there isn't a place as humanities-oriented as this channel. It's the best. This channel is a total gift to me.
YouTuber Book One Drop

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