The widely excepted, but unspoken method of keeping a job and maintaining a neutral relationship with peers is be POSITIVE, be a plus to have around and not a negative someone wants to remove.

Personal problems is not everyone's problem, so leave it at home, don't come to work with a bad attitude.  Don't take your anger out on others.  Inability to maintain your emotions is a concern to your boss and others, be open to your boss about problems that you feel will affect your quality of work.  Create an understanding between you and co-workers, practice methods to calm yourself.  

Meditate.  Excersize.  See a therapist. 

Check your attitude at the door and pick it up after work.  Practice makes perfect, right?