Unfinished books

I was looking through my books in my room the other day, and I noticed that a few of them still had book marks in them. I remembered reading them, yet something happened where I didn't have the urge or motivation to finish them. I sometimes wish that I was one of those people who always finishes books, but for me that can be hard to do. It's not that it's unlikely that I won't, it's just that it can happen.
What also happens is that I read more than one book at a time, more like 2 or 3. I find it hard to only focus on one book. Maybe this should be a good new year's resolution... to finish what I read.