Negative

Why do people waste time saying negative stuff about other people? Can't they just be happy for what they have? I spend my time thinking about what I have and being happy for it, my sister, on the other hand, keeps whining about her lost pens, her friends ditching her, her loving family who's not supporting her enough and so on. She even scolds me for no reason. I think she's not handling puperty well. So, yea.. I don't think she ought to be angry for no reason or whe's gonna get old... Fast~So that's it!