Barbara would best compile this list, not only to clarify what works but also to bolster her confidence, in lieu of making generalized statements about nothing working (which of course is a false statement).
Here are some of them:
When I control thinking, I have self respect for disciplining my mind. When I will my thoughts, it works.
I find I can regulate my mood by being an absolute disciplinarian.
I also had some success when I had a negative thought and just started singing to displace it.
It works for me to write my thoughts down.