I only be friends with certain people, usually whom have same character as me.
Shy & introverted to others but friendly to close ones.
Postive attitude towards studying, not those "don't know don't care" attitude.
I don't choose to be friends (even with people i dislike) because they have some worth. I think that will be real bad of me. I mean, it's like making use of people. I can't stand when people try to cheat me, hence i don't do that to others too. However, i am always the one to be at losing end instead, i feel bad to reject when they asked for help, then i have less time for homework or revision
So sometimes being nice to others is harming yourself.