When I get like that, I experience the anger for a while because to me its like a pimple that is popping and stuff is coming out. (sorry for the visual but a pimple is actually a small thing but an annoying nuisance and many pimples are downright preplexing). Then I take deep breaths and focus on something small to take my mind off all the big things that plague me a the time. I might get a pretty flower and look closley at the soft petals and wonder at the miracle of it's making, or I will watch ants go about their business, or just listen to music and feel the beats. Distractions on little things are not a permanent fix, but it helps you get through what you are going through, and there is an end. Hold on, you will make it.