Do you have some kind of counseling at work? When I faced a similar situation, I went to the counselor at work and it helped a lot. If you do not have one at work, you may want to see someone outside of work. This type of pressure/rage/anxiety is bound to come out either in the workplace or else as a worsening depression. Either way you will jeopardize your job without some way to resolve this, and the best way to resolve this is through some counseling.
Good Luck