Take a break, simmer down, and ignore the cunt that wound you up. They are just someone behind an internet connection, and they will have no effect on your life or the success of your children's lives. Unless, of course, you let them.
It takes a stronger person to rise above the rest and lead by example.
I'm not sure why I felt the need to tell you that, because I'm sure you knew already. You probably give your children the same advice. Anyway, I hope you're alright.