In many cases, success comes from experience, and experience comes from failure. When you succeed, you don't really know why, exactly (luck plays a huge role a

In many cases, success comes from experience, and experience comes from failure. When you succeed, you don't really know why, exactly (luck plays a huge role and can mask many mistakes)--but when you fail you can at least guess why, because your trajectory differed from the successful one, and you can observe the difference between the expected path and the actual path at key points and draw some conclusions.