Another sleep robbing culprit is nicotine. Avoid it, and especially near bedtime and upon night awakenings. Also on the list of don'ts is alcohol-again especially avoid the use of it in the late evenings. Even food can be an enemy of sleep. Especially if we eat heavy meals close to bedtime.
Timing is important.
For instance, exercise in the late afternoon has been shown to deepen sleep. Conversely, vigorous exercise within three to four hours of bedtime may invigorate you and work to inhibit your ability to sleep. The condition of your surroundings can either add to or detract from your ability to sleep. If you can reduce noise levels, control your lighting system and avoid excessive temperatures at bedtime it will be much easier to sleep. If the alarm clock distracts you, move it away from the bed.