You can waste years following confident tips from business gurus and motivators that turn out to be nonsense.
One of the handiest things I ever learned came from a chance meeting with author Bryce Courtenay when I was a clueless wannabe. His one tip fixed a ton of rank amateur moves I was making.
"Store staff were abused. One got grabbed by the throat. Those aren’t people you should pander to. Those are people you should ban from your store."