I have never been able to understand the complaint that a story is "depressing" because of its subject matter. What depresses me are stories that don't seem to know these things go on, or hide them in resolute chipperness; "witty stories," in which every problem is the occasion for a joke; "upbeat" stories that flog you with transcendence. Please. We're grown ups now.
Our memories tell us who we are and they cannot be achieved through committee work, by consulting other people about what happened. That doesn't mean that at all times memories are telling us the absolute truth, but that the main source of who we are is that memory, flawed or not.
I recall that my workshop leaders were tactful in their ways of acquainting me with my shortcomings as a writer. So much so that I hardly realized they were doing it. I want always to keep that sort of thing in mind when I'm teaching. The way you get better in everything in this life is to make mistakes. Otherwise you're probably doing it right by accident. But you have to do everything wrong before you can really start with some authority to do it right.
In writing you work toward a result you won't see for years, and can't be sure you'll ever see. It takes stamina and self-mastery and faith. It demands those things of you, then gives them back with a little extra, a surprise to keep you coming. It toughens you and clears your head. I could feel it happening. I was saving my life with every word I wrote, and I knew it.