Like I learned in the Fish! Book I read, you need to determine to bring your attitude to work. This is because of a psychology of http://en.wikipedia.org/wiki/Confirmation_bias. There is a real reason for no complaining – http://www.cbc.ca/news/viewpoint/vp_mallick/20080331.html. If you need to let out your frustration I have found Tae Kwon Do works well. Here is another creative way http://www.youtube.com/watch?v=ATXV3DzKv68.