I know this isn’t a simple topic with any simple answers, but I’d really appreciate input from anybody struggling with depression or with expertise in this area. 

With depression being the plague on humanity that it is, I really want to do a better job at supporting people in my life who have depression. 

Any advice on how to do this, including things to avoid saying/doing, would be hugely appreciated. 

If you have depression, which friends have a positive impact on your situation, and why?