Momentum can be a gift, but it can also become a trap. You finally find something that works: product-market fit, a reliable growth channel, predictable revenue, a rhythm the team can execute reliably. Then the gravitational pull of short-term goals sets in. A team operating efficiently is a beautiful thing, but who is protecting the original vision? Thinking big is not a luxury you return to once the fires are out. It is part of the job. The best founders hold two tensions at once: execute today with discipline, and keep dreaming boldly about the world they are building tomorrow. Imagine if Amazon had stayed focused only on books because that was where the momentum started. Day 1 thinking challenges us not to allow today’s success to hold us back.