Perfectionism is my old habit. I've been trying everything perfectly. The fact is that I am worried about other's one-side sight and thinking. To avoid other's negative appreciation, I consumed many energies at many times. After I realized I was a perfectionist, I've practiced mental training of letting it be. The training helped me out of anxiety. And, I felt music is also good helper. Thanks to my favorite singers: Jang Beom-Joon, 10CM and Ryuich Sakamoto, who is the legend pianist from Japan; they are really good assistants for my relax  

But, definitely, there is pros as well. Talking about pros I know from books and from my experience, perfectionist is good at their job. Usaually, he doesn't miss his tasks and thinks his job every day, so his boss and the company he works in love him. Besides, he has many responsibilites that he helps other colleagues. On the contrary, talking about cons, as you can imagine easily, he has lots of stress in works and fulfilling duties. Furthurmore, he even has risks of burn out. Therefore, he needs his own practical habit for exhaling the stress.  

Someone said, "Life consists of a bunch of uncertain, unknown things." It's hard to accept the quote into my heart.

Thanks for reading. :)