you say that your depressions had no reason this time?
so what about that occupation issue?
maybe it IS because you are unhappy with what you are doing? have stress? you are so worried and i see that it can be the reason for depression....
and maybe you miss your husband?

i don`t know what to tell you about the question whether to leave the job or not. sorry. never had a real work in my lie. i am just a student...

why are you feeling guitly for leavng it?