You can try to find the glory in fourteen-hour days spent running dozens of errands with hair that's just slightly less crazy than Medusa, but we're not going to force the issue.
To be honest there's really not much glory in waiting in line for a specialty coffee or having to call the Post Office to find out why your employer hasn't received any mail—maybe because the celeb forgot where they lived and gave them the wrong address (which is still your fault).
Although many celebs are normal and wonderful, and incredibly rich people, some of them can be fairly ridiculous. You won't necessarily be able to rest your head on your pillow each night content that you're performing a valuable service for a decent, noble, important human being. In fact, very often this job is practically the definition of inglorious. So we hope you've got a thick skin. You're going to need it.