Trouble Sleeping.

I've been having a big problem with being able to sleep. My mind just keeps going over everything I need to do. My mind won't stop racing. I'm afraid if I stop it'll all just fall apart. But for the past couple of nights I've been using this sleeping sound app that plays rain storms and it's been helping me to fall asleep. The sound of a rain storm seems to calm me right down. It's weird but it feels comforting.