I don't know if there is anyone on here who has anger/irritability as a primary symptom of their depression, but it is one of mine. The unfortunate thing is that I lash out at the only other person who lives with me, my Mother. All the time. Almost everything I say to her is laced with it. I cannot seem to cognitively separate myself from doing so and could use whatever tips you have. It's all fine and well (not really, but better) when I let out the anger when I am alone, but not when I have her around. My only other coping mechanism is to distance myself from her, i.e. lock myself in my room and don't interact with her at all.