The title pretty much says it all. I was originally going to write a long thing about how it is so hard to choose, but you probably already know that.
So, if you are in graduate school/are going soon/went to graduate school, what was your process? How did you choose? And did you already know what you wanted to study, or were you unsure? (I'm unsure...) Did you visit the school before deciding to go there? Did you talk with faculty there ahead of time? This seems so much more important than when I was a senior in high school thinking about college. Though I had a hard time with that, too.