So a friend of mine has been diagnosed with depression, and they've been feeling off for a long time now. 

I thought "Oh okay, I was depressed for 3 years, maybe I can give some pointers"  


I cannot. Holy shit I cannot.  
When my depression ended, it just kind of went away on its own. I didn't do anything. So what the fuck am I supposed to say? If I say that, that feels like the equivalent of " you cant do shit bub, weather it out tough guy"  


that isn't helpful. Having been previously in their shoes isn't helpful, I barely remember the three years i spent in a depressed fog, so I cant exactly offer day to day advice.  


The fuck am I supposed to do here? I remember how cynical i was about everything when I was depressed so the more logic founded the solution the better...maybe?  


I dont know what to do, please help