Name what actually moves the needle: sleep quality, time pressure, light exposure, screen use, caffeine intake, mood, and preparation the night before. Keep variables specific and observable, not vague ideals. Clarity prevents diagrams from becoming decorative art and instead turns them into navigational maps you can test. If a variable feels slippery, refine it until you could track it without debate or confusion.
Reinforcing loops amplify momentum, like a quick stretch improving energy, boosting productivity, lifting mood, and encouraging future stretching. Balancing loops stabilize, like rising stress prompting a pause that reduces stress. Naming loop polarity helps anticipate behavior. Expect mixed loops interacting at once, sometimes masking each other. When your diagram reveals both engines and brakes, you can choose where a gentle nudge has the greatest leverage.