Cognitive behavioral therapy can help with sleep troubles. See The New York Times Health blog for an overview and links
The behavioral strategies for better sleep are deceptively simple, and that’s one reason why many people don’t believe they can make a difference. One of the most effective methods is stimulus control. This means not watching television, eating or reading in bed. Don’t go to bed until you are sleepy. Get up at the same time every day, and don’t nap during the day. If you are unable to sleep, get out of bed after 15 minutes and do something relaxing, but avoid stimulating activity and thoughts.