This all started in the last year or so.  Sometimes I will lay in bed and even though I can breathe just fine I have a thought about not getting air or something and I feel that blood rush to my head and heart race increase and I have to jump out of bed and go outside in the cold to calm down.  I use this as an example but in general I feel like if I am not super disciplined with my thoughts I am seconds away from slipping into a panic and its making me very tired.  I dont wtf is going on