Haha, I've been a heavy talker to myself for as long as I can remember. I never even had a best friend until 6th Grade, and for a while, we went to different schools anyway. Even when I'm not lonely, expressing yourself to yourself just lets 你 get to know yourself better. It also helps 你 remember just what in the hell you're going to do next. It's rather fun, I must say. It'll probably stick with me forever.
