A useful and highly practical structure that keeps me productive during uncertainty is ACTION + QUALITY. Pick one action I know is necessary and one quality to do it with. I don’t worry about strategy, order, or plans. I go basic and practical.
If I’m unsure how to improve a relationship I will listen with empathy. If I’m unsure how to get in shape I will move with speed or eat with moderation.
The action is yes or no, do or don’t. (Am I listening? Am I moving? Am I eating?) It’s black and white. The quality is how I do it, just one intentional characteristic I give the action. (Empathy, speed, moderation) It's a subjective preference or principle.