Don’t Start Your Book This Way . . . Unless You Are Wildly Successful
I just read an interview of several agents. All of them said they didn’t want to see any more beginnings with characters waking up or looking in the mirror. Oh dear, I thought, my book starts with my character in the morning, already awake and he doesn’t look in the mirror, but still. Maybe I should change it. Again. So I looked at some other books to see how they begin and what do I find?
The Hunger Games begins with the MC waking up.
Divergent begins with the MC looking in the mirror.
I don’t know if those were the openings sent to agents or publishers, but obviously there are some exceptions to the rule. 🙂
A. W. Downer 
Both of those books are well-written gripping stories. You can break a few rules if you’re good.