Try this relaxation exercise but before you do flex and relax all your muscles from your toes up to your face until you are as comfortable as possible then concentrate on slowing your breathing down by inhaling deep breath holding your breath for a second, letting out your breath, holding the next one for a second and thEn inhaling again. It feels odd for a few times then your body gets the rhythm. When you are relaxed think of a place you enjoy or somewhere you,ve never been but always wanted to go. Now imagine you are there ( it's only at this point do you close your eyes) Use your senses in layers, first what can you see, if it's a beach the water, people passing by, scenery, activities going on etc. then what can you hear, music, talking, birds, traffic etc. then what can you smell, suntan oil, perfume, flowers, food etc. then even what can you touch, the towel underneath you, the sand through your fingers, the cover of your book. Do all this slowly really try and experience it and often you will slip off to sleep. It takes a bit of practice but it is a well tried therapist exercise I teach anxious clients. Hope it helps you .