Someone dug the ground in the desert day after day, until water sprang up. After the person dug for 30 days, water sprang up in the desert. They sold that water and earned a billion won. Since they earned a billion won for the hard work of digging a well for 30 days, it means that that person earned about 30 million won per day.
It is hard when you make yourself, but it will be tremendously beneficial when you have been perfected and used. Even if you may not make even one won per day while making yourself, you may make a hundred million won per minute after you have made yourself. Therefore, those of you who are making yourselves, make yourselves with hope.