Tackle the difficult things first in the morning; make changes in the way you network. Treat everyone with respect and dignity. This stops you from cynicism and negativity. End your day with that same attitude you started. Renew your contract with a day well completed.
I just don't deal with the negativity. I can't get involved in that side of it. I don't understand it, and you can't let it take away from your life and what you are trying to do.