It has taken some serious shifting of my thinking, over a lot of time, to finally climb back out into my normal healthy bipolar self. Meds took away my mania, accept
psychotic break through, but they made me feel flat affect, much like the indifference you are describing. I am still not sure if I am delusional or am actually becoming a healthy bipolar, but I have gotten out of the funk. So, it has been a long and winding road to discover my true mind again.