Ezio wroteHello,
What creative projects can a psychologist do to help the masses.
What you describe sounds like a case for sociology. Supposedly
social psychology.
I believe that by working on social mechanisms you can greatly improve mental health.
What you can do on a large scale is study and identify problematic patterns in society.
Then devise ways to change these patterns, most probably through education, with the hope that this will bring a mass reduction in mental problems.