My tips for sleeping:
stop snacking/eating by 7, turn off all the house lights at 9, get used to being in bed by 10 or 10:15, and turn off all electronic devices at that time.
Don't drink alcohol or sweetened drinks. They're the antithesis of what a body needs for a good sleep.
Splurge on a really good mattress, pillows and bedclothes, so that you love the feel of it when you get into bed.
Read the book Why We Sleep, if you like reading.