Never let the crappy stuff of any job keep you down. Oh it can get you down, especially when the times are tough. But remember that it's just a temporary feeling and situation--it too shall pass.
Take care of your family. Call a friend. Offer to help even though no help is probably required. When things are tough the best way to feel better is to actually help others.
Remember that you're great at what you do. Remember that no boss can invalidate that by their actions--you're bigger than them, you're stronger than the tough situation you're going through.
Times can get tough--but as the saying goes--nobody cares--work harder. And always keep your head up. Be proud of who you are, of what you've done, of where you're going.
Never give up!