need advice on sleeping....

So my boyfriend is a farmer and he's been working late hours because it's corn silage season. I never can sleep well without him next to me. Someone help me figure out how I can fall asleep faster? Or at least keep my anxiety from taking over? When he's not home all I have is myself, my kitty, and my thoughts and usually I overwhelm my mind with crazy thoughts (crazy as in over exaggerated thoughts not like psycho lol) and I can never seem to stop them and I just end up staying awake either very late or all night. How do I calm my anxiety?