So i just recently realized and admitted that i have bad anxiety that pretty much makes me afraid to talk to new people and ever be comfortable in the situations i'm in. Things such as never having enough money and not wanting to go out and do things because i'm afraid of what bad things can happen.

The thing that is really weird to me is the fact that when i am in a situation such as a fight with my girlfriend or just in general a situation that i'm not comfortable in I start to play a song in my head...a random song...most of the time its a song i haven't heard in months and i just start to sing it and completely tune out whatever else is going on. After about 10 seconds i realize what i'm doing and try and stop but it happens ALL the time and it's really freaking me out. Can anybody tell me why i would be doing this...i don't want to because then i am distant and it appears that i'm not listening and i miss parts of conversations because i just went somewhere else.