Stage 1 is a Failure of Tactics. These are HOW mistakes. They occur when you fail to build robust systems, forget to measure carefully, and get lazy with the details. A Failure of Tactics is a failure to execute on a good plan and a clear vision.
Stage 2 is a Failure of Strategy. These are WHAT mistakes. They occur when you follow a strategy that fails to deliver the results you want. You can know why you do the things you do and you can know how to do the work, but still choose the wrong what to make it happen.
Stage 3 is a Failure of Vision. These are WHY mistakes. They occur when you don't set a clear direction for yourself, follow a vision that doesn't fulfill you, or otherwise fail to understand why you do the things you do.
