That's how I make it through too. Breathing and hope tomorrow's better. I very frequently have to cuss at my own delusions of thinking it could have been, but at least I can still cuss every day.
Ever just go drop some f-bombs in the toy department of a busy store near Xmas time? I did today after that crap with the "friend" and felt refreshed, and a lot naughty, but only slightly bad about it. I do "Jay's rap" there sometimes or sing "Rory" by The Vaselines. I love the horror in the parents' faces and the laughing of the kids because someone's cussing their head off or singing about someone riding them. Some guy threatened to kick my butt today, using the a-word. I said, "aww your daddy likes saying a--. Wanna say it with me?" after which the kid started to about fall out of the buggy laughing and saying it a few times. The mom raised her arms as if she gave up and the dad stormed off. I bring joy to children, one uncensored word at a time. That kid was too big to be in the buggy anyway.