late nights and early mornings

I've had a lot lately. I try to sleep but my mind won't stop rolling through worries and ideas and it keeps me up. When I do sleep it is quite restless, I have aweful nightmares and wake up crying or screaming. In the early morning I wake up and my mind continues to play out things that worry me. I've lost control a little bit and I just want a restful night. I want my heart and mind to be at peace.