Do streaks actually help you build habits?

Streaks can motivate in the short term, but for many people they actively undermine long term habit building, especially with ADHD. The psychology cuts both ways: loss aversion makes a long streak feel valuable, yet that same pressure means one missed day often triggers the what the hell effect, where people quit entirely instead of resuming. Notably, research on habit formation, including Phillipa Lally's well known study, found that missing a single day did not meaningfully slow automaticity, which suggests the streak itself matters less than returning quickly. Durable habits come from flexibility, not perfection. Rules like never miss twice work better than unbroken chains. That evidence is why Orby skips streaks completely, relying on warm reminders and easy restarts instead, while most mainstream habit apps still treat a broken chain as failure.