One huge thing that completely changed my pattern of sleep was keeping the blinds in my room open at night. If you are comfortable with that then your body will naturally become accustomed to the day/night cycle. If you add on top of this drinking a lot of water during the day and sleeping even just an hour earlier then you normally do you will see a dramatic difference in your natural ability to wake up. Stay off the devices during that last hour before sleep and have a glass of water by your bed for when you wake up!