ok, I read the article... it's very interesting. but I'm not sure if i got the point of it.
My psychiatrist always told me that depression and anxiety they usually happen together, one comes after the other. It seems that anxiety may come first and then depression as a consequence from the frustration, that happens when the anxiety disorder became something quite serious.
One thing I don't know if I agree or understood about that...
I get anxious not only because I'm uncertain of the future but mostly because I already know what will happen - I will fail (it says there this is what happens only with depression). This is the fear of failure, repetition, an eternal cycle. Anxiety disorders are mostly triggered by traumatic past experiencies it gets registered in our mind, whether we're fully aware or not.
And we repeat and reproduce them, being sure that is what will happen.
I still think that the line that divides depression and anxiety is a bit blurry. They are kind of...different things, but they act together.
Anyway, i'm not a doctor and probably I'm saying the most absurd thing around here. But this is the conclusion I take from what I experience by myself and other people I know with the same 2 issues.