Our 5 yo DS seems to think a lot. I don't know how he compares to other kids of his age, but it does often affect certain aspects of his life. Such as sleep disturbance.
I shan't go into detail over the things we've tried to get him to sleeping through the night, but basically we have tried everything you could possibly think of and done it all to the letter. I've now managed to whittle him down to waking just twice a night, and when he does wake he makes himself frightened if we're not in the room with him. So I'm now telling him that he has to read himself to sleep so that I can go back to bed. It seems to be working...
The thing is he's one of those kids who can work himself into a frenzy - he sometimes makes himself throw up if he doesn't want to eat a food (even a food which he says he enjoys 
), or as happens every night, he works himself into a state so that he feels scared without us near. I think the reading thing helps to distract him from his thoughts. Perhaps I should invest in some talking books for nights when he doesn't want to read.
Apart from this he is a lovely, sunny, fun, bright, affectionate and mostly confident child. He's doing well at school and enjoys going there.
So I'm curious as to whether anyone else has/ knows a child like this? When I tell people about the sleeping problems I get 'the look' which says 'Clearly you're doing something wrong as parents'. Which isn't true - at least, it's not the cause but I can't be bothered explaining that to people any more! Surely we're not alone?
I'm wondering whether anyone else has a child that thinks themselves into a frenzy and has trouble sleeping/ any other effects of the overthinking thing.