The most difficult thing for me is that I'm a volcanologist at a university. So I don't get to go work on volcanoes unless I raise the money to do so, unless I get a grant from the National Science Foundation. I also have responsibility for teaching and training students, and for doing administration both within the university and within the profession. So there's a big juggling act involved, and while I enjoy most parts of the job, it is often overwhelming to try to do them all at once.