This one requires professional assistance. Please see a professional to get their opinion and help. The sources of stress, well, you all know the bigger ones. There is organizational stress, including things like task and role demands, structure and power grids within the organization and management style. Environmental stress - sick building syndrome, uncomfortable work station design and seating, incorrect lighting, poor quality tools to work with.
Psychoacoustical stress is big factor in our lives.
And finally the biggest category of them all, the Little Stuff. Scientific research is finally proving what we've known for years, it really was a single straw that broke the camel's back. So now it's time to do something about it. The most desirable answer is to eliminate the stressor. Decide if what is causing you the distress is really worth keeping in your life.