Why do I feel so alone and anxious now that we're succeeding?

You built something that works. The numbers are good. People look to you. And still, at night, your mind will not rest. This is not weakness. It is what happens when a team learns to keep its doubts to itself. The higher any of you rise, the more your words sound like judgment instead of conversation. People soften what they tell you. You soften what you tell them. Slowly the whole group performs a certainty none of you actually feel — and you carry the real cost of that alone, even in a room full of people. You did not fail by building something that works. You only fail if you let the silence become permanent. That is within your power to end, starting with one honest conversation, not a new strategy. If the anxiety runs deeper than work, talk to someone trained to help with that — a counselor, not just your pod.