Brain wont quit

My daughter, who is my youngest, left today with my mother and step father for a trip to New York. It will be an awesome experience for her. For me? I have my demons (anxiety) to deal with. I have a phobia of flying so putting her on a plane without me is horrifying. I also am realising that there is separation anxiety. I feel it every time she goes to her days and we do 50/50 so i feel it a lot.
I had quite a good anxiety attack i managed to get them to the airport before i broke down. They arrived safely so i can calm the hell down but my brain is in overdrive. Of course i have to get up early tomorrow