Anyone who believes, 'anything is possible' is usually thought of as ridiculously optimistic or naive. We don't have to think hard to identify what's clearly beyond our abilities. However, we can be too quick at times to dismiss an idea as far-fetched when it might, with the right levels of faith and effort, be achievable. You're right to be intrigued by a possibility now. If someone else has achieved success with it, then so can you.