Mind wanderer

It's like the plague. And I can't escape it. I get enough sleep at night, I go to class, I take out my notes & highlighter and pens, I try to stay engaged. I think I'm doing so well. And then I hear the class around me flipping the page & that's when I come back to reality. I don't know how to fix it, because it's not like I'm falling asleep, I just zone out and think about more interesting things. Like my wedding and honeymoon and what's for dinner or the next time I'll talk to my best friend and what I'll tell her.