Who can tell me how can change my "user name"?

I want to change my "user name",but I dong't know how to do?Please tell me,thanks!

How do you like a petty-minded man?

I think we should not care this kind of person,but I can not help angrying.Three days ago,I quarrelled with one of my classmates,in fact,I have already forgiven him and forgotten it.I think we should...

What would you do if your friend break his(or her) promise for you?

I have a very close friend,but she has a very vital shortcoming that she always break her promise for me.Although things she forgets are not imporment,but I feel very angry.This weekend,she has...

What will you do when someone provoke you?

I have lost my temper tonight.I think I am not wrong,but I know the influence for me is very unfavourable.I want to know what you will do if some provokes you.Give me some advice,thanks!

How can I forget him?

I met him at the beginning of this semester,and I have fallen in love with him at first sight.But I know it is impossible for us...He had been here for only a little time,and had already left .But I...