if you're depressed, on medication, et cetera, feeling spiritually dead is pretty common.

Inward looking, or solitary practises probably won't be much use to you -- maybe try some volunteering or charity work.

Doing good, helping people in need -- what could be more spiritual than that?

And, as an added bonus, you get to spend time with people, and be nurtured through the jokes, and smiles and warmth of those others.

Just an idea...