People with Depression Use Language Differently
Not meaning to demean anyone's hard work with psychology, but last year I changed my diet and my depression went away almost completely.  
From routinely wishing to be dead -> to walking a part of the camino trail in europe and being able to hold a job.  
Turns out, that all symptoms return when I eat carbs or fiber.  
But even after the depression gone away there are still some issues in thinking and moving slowly, which could be addressed by therapy. But I'm kinda mad that no doctor ever told me about diet and gut-brain connection.