If you had one life changing piece of advice to give to someone who just turned 21, what would it be? originally appeared on Quora - the knowledge sharing network where compelling questions are answered by people with unique insights.

Answer by Marie Kondo, Author of The Life-Changing Magic of Tidying Up, on Quora:

Above all, you should work on something that you are passionate about with an intense amount of concentration and dedication.

While you are still young and have stamina, investing time in work that excites you will allow you to acquire skills that will distinguish you from others.

In my case, my interest in tidying started when I was 5; I read anything I could on the subject. Then, I began working as a tidying consultant starting at 19 while enrolled at a university. I was providing private tidying lessons that each lasted 5 hours.

After graduating, I started working at a staffing company as a salesperson. However, I continued providing lessons on weekends. At the time, I honestly never thought tidying would become my primary business. My only intention was to pursue it as a life-long hobby. I poured all my efforts on each of those lessons, and I promised myself that I would not let any of my clients ever relapse.

Over time, weekends began to feel like they were not enough, so I started giving lessons in the morning before going to work between 6 - 9 AM.

After I started my business, I would give as many as three lessons a day (7 AM - 12 PM, 1- 6 PM, 7 -11 PM). While I was writing my first book, I would go to bed, wake up at 2 AM, write until 7 AM, and then do my lessons. (I was 25 when I wrote the first book in Japanese.)

My personal example might be a little extreme, but if you want to transform your life, you need to commit a considerable amount of time and energy. Paradoxically, the energy for your work increases the more you concentrate on it.

Of course, you do need a certain degree of self-regulation and self-care, so you maintain your health, but if you are 21, you could hold off leading a balanced life till a little later.

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Published on: Dec 27, 2016