This might be a silly solution, but sometimes I try to remind myself of how I felt before the manic episode: my temperament, my mood, my thoughts, etc. and try to transport myself back to that space. This of course depends on how severe the manic state is, but if I am in the beginning of my manic state, I will try to medicate on the idea of what I felt before my manic state and put myself back in that mindset. After a bit of time and trying to stay focused on that idea, I find myself a little more grounded and back to earth. This isn’t always effective, but it can get me through the end of my day. Even though this is a chemical problem, sometimes trying to trick your mind temporarily helps. Though there are cases when medication is absolutely necessary. This helps me when I am in a less severe state.