Put your energies into creativity. Forget about anger as a problem, ignore it. Channelise your energy towards more creativity. Pour yourself into something that you love. Rather than making anger your problem, let creativity be your object of meditation. Shift from anger to creativity and immediately you will see a great change arising in you. And tomorrow the same things will not feel like excuses for being angry because now energy is moving, is channelised, is being sublimated, is enjoying itself, its dance. Who cares about small things?