Did you ever keep a diary when you were younger? Was your favourite part about that diary going back and re-reading some of your old entries? That was definitely my favourite part. It's also the reason that I've been going through and re-reading a lot of my old blog posts lately.
You really learn a lot about yourself by doing this. For example, I realized that I was a little baby crazy last year. Oh man, I had the baby fever and I had it BAD! I also got to see how, through writing down my thoughts, I was able to work through my feelings. In the end I realized that it wasn't that I wanted a baby last year, it was just that I couldn't stop thinking about what life with a baby would be like. Kind of neat.