My mood was wonderful, inspired, balanced. A combination of all of those?
Throughout, from beginning until the end.
I was going to say "as usual", but of course there are exceptions. I instantly thought of the Furies trilogy, as an example, which was years ago, and ok, there I was also inspired, though my mood was definitely not wonderful and balanced while painting the Divine Fury! :D
(Otherwise, I couldn't have painted it.)

This entire series (Adumbrations) came from an entirely different place though.

Thank you for these lovely questions!