Insomnia Support Group
Insomnia is a symptom, rather than a disease, and is characterized by inadequate quantity or quality of sleep. People with insomnia complain of difficulty falling or staying asleep, which results in significant impairment of daytime functioning. Insomnia is categorized as transient (shorter than one week), short-term (one to three weeks) or chronic (longer than three...
Also regarding the wind-down period, yes I agree that's important. If you don't have an hour or more, take 30 minutes to de-stress a little. You will benefit.
It won't be perfect, but then again who's got that? Go for as good as you can make it and let the worry go from there.