As all my friends knew, I am a little introverted in daily life. Also some friends say that I am a melancholy man. Actually, that is what I am.  I also think about why I have this kind of personality and temperament. Do you know when I was young I was a very shy boy. I dared not speak in the public and had very little words. This condition has been turned into better after I went to university, and now I have a great change in working. But I still prefer quiet environment more than crowed places, and I am not a very interesting and humorous person.  From my part, I can treat everyone as more sincerely and honestly as I can, and I will share the happy things with everyone openly and frankly.  The other thing which my friends alway remind me is smiling more often. Yes, my friends are right, I will attempt to put more smiles on my face and be more friendly and kind. I have read some book about personality and psychology, the experts's researching theory is that introversion and extroversion have no difference, both of which have their own advantages and disadvantages. What I am thinking now is that although there is no temperament is better than another, I should live in this world happily and share the happiness with my friends around me. From the day now, I will put more smiles on my face and live in everyday happily.