Instead of desiring and expecting structure and going limp once the structure fails, try instead to drop the crutches and strengthen the "muscle" that keeps you always dynamically evaluating what is best for you to be doing at this very moment. There's a desire to have a simple world where you just color in between the lines and everything works out while you go on autopilot, but the best laid plans of mice and men often go awry - the world does not owe you your schedule. Just stay awake and always be re-evaluating, don't get caught in sunk-cost fallacy, and don't hold onto anything too tightly.