What does it mean that habit feedback loops?

Habits persist because they create their own reinforcing feedback.

Example: You start running three mornings a week. The first few sessions are miserable — your lungs burn, your legs ache, and you have to force yourself out the door. But after each run, you feel a surge of energy and mood elevation that lasts hours. Within a month, something shifts. You wake up on a running day and your shoes are by the door before you've consciously decided anything. The discomfort cue has been overwritten by the reward anticipation. The habit is no longer something you do — it's something that does itself. The reward (energy, mood, identity as a runner) has reinforced the cue-routine connection so thoroughly that the loop runs without executive oversight. The feedback became self-sustaining.

Try this: Pick one habit you perform daily without thinking — brushing your teeth, checking your phone first thing in the morning, your coffee ritual. Map its feedback loop explicitly: (1) What is the cue? Be specific — a time, a location, an emotional state, a preceding action. (2) What is the routine? Describe the exact behavioral sequence. (3) What is the reward? Identify both the immediate reward (sensation, relief, stimulation) and the reinforcement signal (what makes you more likely to repeat it tomorrow). (4) Where is the self-reinforcing element? How does the reward make the cue more salient or the routine more automatic the next time? Write this out. You will discover that the habit persists not because you decided it should, but because the reward has shaped your nervous system to detect the cue faster and execute the routine with less deliberation each time.