We all have many different sides to our personalities and as we get older, we usually settle into following one and suppressing the others. For
instance, as a kid I would switch between being daring, wary, rational, shy, happy-go-lucky, etc. I used to feel those different sides of myself
competing for control over how I would react to a given situation. Part of me would want to be daring and adventurous. Part of me would want to be
wary and cautious, and part of me would view the situation logically and objectively. All of these thoughts would be going on simultaneously, but
without any clear definition. I just had a sense of their existence. As I got older and had to start conforming to the "grown-up" world, my
logical, rational side started to be the most influential part of my personality. I began to suppress the other sides, bit by bit. They never went
away entirely, and when I am feeling free to accept my whole nature, I can still experience all of them. Those different sides of myself, when I can
find my way back to them, help me to see all sides of a situation, and make more satisfying and honest decisions.
I don't know if this is similar to what you are experiencing, but if it is, I would not be afraid of it. It is just your personalities contemplating
various information and thoughts about different things in your life. View and contemplate all of feelings you have, in order to see things from all
perspectives. They can be of great help when you are confused or unsure of something in your life.
Part of the reason why everything speeds up when you feel these voices, may be because you are afraid of them and the anxiety you experience may cause
your brain to start processing everything around you faster in an attempt to block out or understand those feelings.
If you hear the voices speak to you directly or tell you to do specific things, it may fall into the schizophrenia category, but unless the voices are
detrimental to your life or health, I don't see that as being a negative thing. Why should we take drugs to suppress voices in our heads, just
because someone else says they shouldn't be there? That's like telling a child that their imaginary friend doesn't exist, and they shouldn't say
their friend is real, just because we can't see them.
This is just my opinion, and you should definitely do whatever you feel is necessary, for you to be happy.