Can't even switch off when I'm asleep

So I made a post yesterday about my difficulties with switching off. What I've remembered after my nights sleep that I didn't explain in that post is that it doesn't even stop when I'm sleeping.

There is a situation in work that I don't know what to do with and although I know I need to wait til Monday and talk to my colleagues, my brain desperately wants to problem solved it. I know it's pointless because I can't solve until I've discussed it but I can't switch off to it. To the point where I had quite a broken sleep last night because I kept dreaming about how Monday is going to go and it kept waking me up.

This is quite common when I'm anticipating something, I will have lots of dreams related to it. It sure doesn't help my difficulty with switching off because it is then my first waking thought.