I like the videos of rain on a roof (usually, some old barn or the like) on youtube to help me get to sleep. But honestly, when I am suffering from really bad anxiety, I have to be exhausted to fall asleep.
You could use a cooling fan, but that uses a lot of electric energy in your house. You could open the windows in your room a few hours before going to sleep. You could use a cooling blanket. There are different options if you want cooling. As for anxiety you just need to relax your mind before sleeping. Unless you having anxiety because you are scared of not waking up in the morning. That is possible but highly unlikely.
If your feeling anxious about not sleeping and the thought of lack of sleep is causing you to be up most the night sometimes taking time out during the day to think positively about sleep helps. I can't say it's a perfect solution.. but what sometimes helps me is taking a walk, meditation, and relaxing thoughts towards sleep.
