I think you need to get yourself checked
Seeing ur own piece as a opponents piece
I think you need to get yourself checked
By who? If u have any cure for that it would be great.

lol I know this happens to alot of people, it seems to run in familys... I wouldnt worry, about it unless it is screwing up you game lol =) (of course it is...)

There is some positions where taking away for example your own h-pawn allows to activate the rook, getting a much stronger attack. For example in some variations of the dragon sicilian, where white simply plays h4-h5 to pry open the h-file.
It is really usefull to calculate more slowly! It's very important.
Do any of you ever have this? )) Seeing a piece and wanting to hit it. Only to discover later its ur own piece ))))). Ok, there is some undivited attention then probably ofcourse, but still. I sometimes have this. )