Stress about the next day does that to me. Falling asleep is difficult. Staying asleep is difficult. And I will keep jolting awake every 10-15 minutes as the sound of the alarm clock draws near. So for me it is a matter of needing to find ways to reduce my anxiety. I use an essential oil spray I made on my pillow at night (lavender, eucalyptus and tea tree) and it does seem to help some.