Is it normal that I can't stop talking with myself?

I know alot of people who said they had something like that, sort of a "dark side." I went through a stage of depression in my early teen years and sort of experienced something like that. I'm going to sound like an emo if I told you how I got over it, but it might help, so I guess I'll look like a freak on a website full of weirdies lol This is what I did. Voice would pop up, I would ignore it. I wore a necklace with the symbol "luck" in japanese, it was kinda pointy, so when I started to feel kinda low and the voice kicked in and I felt negative I would squeeze the necklace until the thoughts went away. That made a bit of a mental association for me, bad thoughts equal physical pain(from squeezing the necklace), so the thoughts would shove off. Also it's a natural reaction to stop what your doing and defend yourself when you feel like your in danger, so the pain wipes away the thoughts. You also have to force yourself to think positive. If you do converse with the thought, think of something positive to fight back. It's like learnign to love yourself.