I understand this flat feeling. It is usual my state of being, until of course I start spinning, then its like a downward spiral that I can't control.

There is no right answer, and honestly, my pdoc are therapist are happy I am this way, and it sounds like yours are too. But dammit, its not living. Existing isn't living. And I am sure if you ask them to give you something to make you more "up" they will tell you its dangerous because it may bring on mania.