A horseman's head is in Athens, and his body is in London: Poseidon's torso is separated between Greece and the U.K. This means that they cannot be celebrated and appreciated as a whole in the country they came from.
When I start getting embroiled in heated debates and feeling stressed, I just turn everything off and disconnect from the world. I simply tell my colleagues and friends that I am not well and need to cancel all meetings for a day or more. I take it easy - go for a long hike, take a vacation somewhere, or just stay at home and read.