Jarebear: Time to have a check up with your Doctor, my friend had a 'return' of depression and it was a new thyroid condition. She was prepared to die early like her mother... not a sensible plan.

I will treat you as my old friend and strongly encourage you to not give up and go back to basic health checks. Including T and Pdoc if you are under their care.

For myself if a mood lasts long enough for me to revert back to feeling like crap and the normal meditation, and other techniques do not make a change I have learned to call my Pdoc and get on her cancellation list for an earlier appointment.
She is good so sometimes she can just call me and break the cycle of the mood, by reminding me that depression is not a straight path to healing and at these times we need to find our compassion for ourselves.

Take care,
G