If you can get your hands on this essay it's worth a read. I'll highlight some passages which really stood out to me. Love that line - non-poetic statement of a poetic truth. That last line is powerful. It's realizing that despite what your character does - they may not have gone that route. Alternatives are always there - which she touches on later in her essay explaining that flat characters are characters with no alternatives. Think of the Hunger Games - the writer could've just had Katniss' name drawn but that doesn't allow the mc to have a choice - by having her sister's name drawn Katniss now has several choices. Bowen also describes weak novelists as those giving categoric "description." Very good/relevant tip. That last line is a scary thought.