Here are some things to avoid at the beginning.
1. Waking up. “The alarm clock jerks 37-year-old Rachel Farrant out of a sound sleep. She groans and fumbles to shut it off.”
Don’t use the alarm clock. It won’t grab anyone’s attention. Did it work in Groundhog Day? You bet. Will it work in your story? No.
2. A dream. Particularly a dream that starts out like a normal scene and then weird things begin to happen before, oh twist, it turns out it was all just a dream. Yucko potorie.
3. Alarm clocks, ringtones, knockings on doors – leave them out. The smell of breakfast rousing your protagonist from her slumber. Your protagonist getting out of bed to look at themselves in the mirror. Your protagonist waking up on the first day of anything in particular.