Do you work out? If so, make a protein shake/smoothie and hit the gym. Take out your frustrations on the weights, whatever. When I'm feeling particularly bad, I hit the punching bag for a bit. Gives me nothing else to think about but that. And I hit it hard. Lately, I've been pushing myself further than I have in many years.
You'll figure it out.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.