I don't sleep.
Alright, I'll be a little less dramatic. I don't sleep as much as I should, and because of that my skin suffers. I have dark circles under my eyes and puffiness 24/7. Though I'm certain that getting more sleep would be much more effective than an eye cream, I'm in my last semester of college, interning part time and looking for a job, so sleep is going to have to wait.