"Lights Out: Sleep, Sugar, & Survival" by: Wiley & Formby. pretty much the sleep bible 'round here.
cut out tv before bed (unless you already have). try some dark orange/reddish candles before bedtime to get your body all mellowed for a good nights sleep. get your room REAL dark, so can't even see your hand in front of your face.
restless mind from work or just in general??