I found this article that seems apropos for the Depression-Anxiety Support Chat on the 8th of December at 9PM EST for this time of the year. "When Positive Thinking Doesn’t Work, This Does"
When Positive Thinking Doesn?t Work, This Does | World of Psychology
Hope to see you there.
There is a Depression Newsletter
Weekly Depression Newsletter | Psych Central
and an Anxiety newsletter.
Anxiety Newsletter | Psych Central
These can be subscribed to if you want updates regularly.