Until last year, I wanted to be rich. So I tried small business that sells my math or science video lecture to Korean young students who want to enter the science high school. So I earned 2 million won in five days by launching my lecture. After that launching, I tried to make next lecture to make more money. It took 2 months to make everything. But, no one of my clients bought my lecture. So I called and asked them why they didn’t purchase. After calling I realized that I don’t have enough ability to satisfy their needs. At that point, I realized that my ability decides my wealth. So I came back to my university and studied hard. And I felt that I have an interest in study pretty much. At some point, capable engineer like professors looked better than a rich man for me. Also, the imagination of being able to succeed in a special way was disappeared. So right now, I want to be expert in my major and make innovative technology. Then, I will get enough money and honor.