Keep lights low in the evening. It helps to prepare your body for sleep. Try not to eat or drink a lot in the hour or so before bed - digestion and trips to the bathroom can keep you up. Wear socks if your feet are cold. Get some exercise .
Studies show that regular exercise can help people sleep better.
But, be careful not to exercise right before bed - a workout has an immediate energizing effect that will probably last for several hours. Don't hesitate to ask for quiet - a lot of people need silence in order to fall asleep. Get earplugs if you need them. Reading or a warm bath or shower can help. Catch up on lost sleep over the weekends, but not too much.