Don't Be Afraid To Say Nothing
It's easy to feel like you're given two choices in most situations, but you're actually given three! At some points, you actually only have two choices, and you may miss your precious third option.
Sometimes, doing nothing is a choice in-and-of-itself. What decisions you make are the central theme of this game, so you want to choose carefully and consider every possible angle. Letting the other person do their thing may be the best call.