(CNN) -- "Year in review" time is upon us! You can't go on the Internet without being inundated with the top "fill in the blank" stories of the year -- from pop culture to politics to even the "Top 10 Twitter fights."
But these lists also remind me of the things I wish I hadn't learned about in 2013. I don't mean the events I wish hadn't happened but the lessons from this year's events that I wish I could have avoided. And I would wager that many of you would agree with at least a few of my choices.
What unwelcome lessons did 2013 bring for you? I'd love to hear your thoughts in the comment section below. And best wishes for a 2014 filled with health, happiness -- and fewer lessons you wish you could have avoided.
So here's my list: