Freeze out

I'm mean and self-obsessed. Well I don't know about the self-obsessed part, but I sure am mean. I wonder if it comes with being a Bengali, the fact that I am very particular about things and how people behave and how they talk to me. Or maybe I'm just pointlessly maligning my most beloved culture to my own deranged means. Hanging on to people's attitude and body language, hovering for hours over "what is meant, what it probably should have meant, why did he mean that, oh! what nerve!"...But it isn't this way all the time, but sometimes I end up saying things that I know is right, but isn't acceptable. Although why it isn't acceptable is beyond me. Not being easy is normal right? But this is a trait which makes people think twice before asking me for stupid favours which are completely annoying. I mean I am helpful for sure, but only to those who deserve it, only to those who ask for help in time, for them I can go to any extent to figure something out. But this 11th hour business annoys me greatly.
I don't know what all this qualifies as, am I dramatic, am I over-sensitive, am I cold...or am I plain mean?...