You mentioned you had had a "nervous breakdown" a few months ago. Did you really,or is that a figure of speech? If you did, then it is obvious that you are still fragile and vunerable, and need to continue to see your psychiatrist/therapist/counselor. If you never saw any of these professionals then it would not hurt you to make an appt now. As Rivalicious said, illness can do funny things. Depression can make you irritable, angry, exaggerate circumstances because everything get magnified. Seek help before you leave your job. Check with your employee assistance program. This is what I did and then I used the Family Medical Leave Act and short-term disability when I had a nervous breakdown. I am very glad I reached out for help. After stabilizing on antidepressants, my situation was not as bad as I had thought. You may too, after getting help, or at least you will be in a better space emotionally to look for a new job. God Bless You!