i always try hard not to hurt anyone as well... but i later take it out on myself..
depression by itself will make us feel guilty... even if there is no reason for us to feel it...
to me its just one more of the symptoms that i try to handle the best i can and reassure myself that it is the depression making me feel that... because we cant do anything about the past even if we did do things to feel guilty about, but we can do something about the future and rectifying the guilt