How to make your head be quiet

So, generally speaking my anxiety has pretty much been in check lately, despite our struggles TTC (which actually make me feel more depressed than anxious but anyway). However, for some reason, especially in the last three weeks I feel my anxiety rising again. And the worst part of it is that when that happens, it just makes me feel insecure about everything. I start feeling insecure about relationships, I start feeling insecure about my job, etc. And as you fellow anxiety sufferers will understand, that just makes the anxiety worse. Last night I woke up at 4 and could not go back to sleep because I was anxious about my job. Last week I had trouble sleeping because I was convinced that my friend was mad at me/avoiding me because she would not respond to my messages and when she would it seemed distant (apparently her and her husband have been under a lot of stress, so that might be a legitimate excuse why, but I seriously felt like maybe it was because she saw me as a burden and didn't want to take me on anymore. I still don't know any reason, but I guess I was upset because twice she promised to come see me when I was ill and she didn't come or apologize for not coming.).

I thought I was in a better place tonight, but I am really not. Today I swore my boss was inexplicably mad at me because he barely spoke to me, and again for some reason I am stressing about my friendship because I feel the urge to find something random to text her, but then the other side of my brain is like "no don't do it because you will seem too clingy and all you will do is annoy her."

I just want to be able to sleep because I am so tired. I'm seeing my therapist tomorrow so hopefully I will feel better after seeing her, but that does not resolve my issues tonight. Trying to ignore the negative thoughts is not working.