What would you change?

This isn't a post that's funny or has an awesome link in it. I just wanted to squeeze out some gray matter onto the proverbial paper here. I was just wondering if you could go back in time, you can take a moment to laugh here, because all of you who know me can see this is going to be a complete geek out. If you could go back in time, would you change anything? I am so on the fence with this, I would hate to change something stupid that probably added to my character and have it ripple the rest of my life into something very different than what I have now, and I dig what I have now. I would like it if everyday maybe I could alter one small detail, for instance: If I could go back today I would sit in a different chair during the Holiday lunch party at our office. I overheard way too much about a lot of people's personal lives. Otherwise I don't think I could live with myself having changed anything major, what would you do?