Do you feel like you have a split personality disorder?

I'm really not sure if I do, because I feel like I'm in control. It's like I have a collective amount of different personalities. I can choose to express one of them, but other times they'll just start taking over.

I feel like it's hard to be myself. I want to express my normal self, but people don't really like that side; especially compared to my confident personality. I have to wear that face everytime I leave the house for work. I also have a mean and nasty side. He wants nothing more than to prove how insignificant our human existence is.