IMO, if you actually have depression, like for real, then you cannot just treat it like that, by following your "Depression Easy Solution".
Maybe if you are going through a rough patch and you just feeling sad and demotivated, then yeah, doing what you wrote will help.
While it could also help truly depressed people it definitely wouldn't be enough. Sometimes medication and therapists are needed and that's still not something that will just cure you easily and immediately. It's not that simple.
Still, I guess, following your so-called solution, could be helpful and it is a nice way to start slowly "curing" your depression.
But there are a lot of different situations and variables.
What if someone doesn't actually have a good family or anyone close to talk to? What if depression has ruined that persons' life and opportunities to improve as a person and now, made it just really hard to do anything, to start communicating and building relationships?
I believe, if some truly depressed people read your post, they would just be outraged by it or would just laugh at it.
At least you sound like a nice, positive person and you said that you are not actually trying to make any suggestions about how to cure depression, though it does actually kinda seem like you do.
Anyway, sorry for my rambling.
I'm done.