depression -> thc-> withdrawal

Question first: does someone has experience with my problem? Preferably long term.

i've finally gotten diagnosed with (chronic-) depression a while ago and am quitting weed right now so that my healthcare provider covers the cost of therapy and meds. We all know the classic depressive episodes while quitting and the majority knows, that this is going to end sooner or later and that one will feel "normal" again after everything from two weeks to a year.

Now i'm depressed for as long as i can remember (at least 15-20 years (i'm 27)) and have been in therapy long before i tried Cannabis (i am certain that this mood does not com from cannabis overuse because i've had it long before i consumed for the first time.) Also i'm unmedicated and haven't smoked for nearly a week now.

Did anybody experience a similar situation and has some advice on how to cope with depression (which won't end in the forseeable future) without "turning off my head" with weed? Thanks in advance :)