Ang, there is the db technique of putting a STOP sign in your head when these thoughts start to come on. Think of a mantra you can say to that will calm you down.
For example, my way is to picture the thought in my head as a picture, then I smash it and it breaks up and floats away.
I also say "soothe the mind, calm the brain". I don't know where this came from but it's my way of letting go of the freaked out thoughts.
And trust me, this does get easier as far as the panic attacks, mind racing, adrenalin flowing, wake in the middle of the night terror thoughts. The more you practice db and stopping those thoughts the better it will become.
Just keep moving along, practicing, reading all you can and doing stuff for YOU and your great kids.
Me:49 H:47 S: 16 T:27 M:25 My EA: 2001 His PA: 10/2007, 6/2013 Separated, but H still in house
Find your Shambala: a place of peace and happiness.