To analysis myself after DISC workshop

I never trusted any form of psychology tests, for I believe nobody would know me better than I do. But as the DISC workshop is compulsory and I can go to NTU to meet my friends there, I was not too reluctant to go.
After a brief opening, we were introduced to answer a series of questions. What was quite interesting was that after checking our answers, we were able to draw a graph indicating our characters. To my amusement, the result showed that my image shown to others was exactly the same as the one in my subconscious. This, as explained in the material, is good and showed that I have high self-awareness. And just like I had expected, I am typically a thinker.
It can be a good thing in that I do not quite have to worry about my study. In fact, I am a perfectionist to a stage where I can not stand myself making a tiny mistake. I am always aggressive and competitive. Whatever accomplishment others strike, it will arose great envy from the bottom of my heart. It spurs me to work hard and achieve the same, or even better. My scores in recent tests may be good in someone’s eyes, but they fade next to the effort I have put into it. I am so afraid to lose, so I just push myself forward again and again. The wounds caused by my failures before never recover, they just run deep. Whenever I want to have a rest, they remind me of the pain I have suffered. I still could recall the sorrow I experienced after the college entrance examination. It is not because I couldn’t enter my dream university, but I didn’t keep up to the end and try my best.
The most vital weakness shown in the test is I can not successfully communicate with people. I have to say that I do not have the eagerness to talk to others. And I tend to have prejudice over someone I dislike. When you first meet me, you are most likely to feel I am a proud and hostile man, even if the fact may not be like that. I have suffered from this weakness for a long time. However, my devil is so deeply routed that every time I failed within a couple of days after I made up my mind to make a change. I am rational almost all the time. But I turned totally idiot when I am working with myself.
Till now I came to believe every one has his own limit. I used to suppose that I can do anything. But there are times I am confused, times when I could not see my light tower and go the same circle again and again.
The most difficult battle is the one against ourselves. It’s like using a knife to cut down the rotten part in our body, pain but meaningful. It is the only way for us to live on, and is a necessary step to reach manhood.