DS2 (12) is always coming home from school mis because people have been 'nasty' to him. Turns out the examples are things like in a group discussion his teacher didn't think his idea was very good and told him why.
Reading between the lines, I get the impression a few people are getting a bit tired of his company (teachers included) because he seems to demand such special treatment or he'll act wounded. I really want him to learn how to be be more cheerful and robust about stuff. But how? Don't want him to think I don't care if he's upset but do need to encourage him to grow a different attitude when he tells me all these very minor grievances that he has with other people which are making him so unnecessarily miserable.