don't know if i can be much help.....i usealy don't feel my feelings so its hard to know what thay r when i do......but i understand what u mean...sometimes i want to feel something( anything) that i think i just make it up...like i'll become super happy or somthing.....and i don't know if its real or if i just want it to be.....
i can't say how to find the diffs but just wanted to say your not alone