What do Michael Jordon, Muhammad Ali, and Roger Federer have in common?
All were arguably the best performers in their chosen sport. All were 100% focused on their goals. And ALL had Professional Coaches.
Their Coach would be listening to what was said about the latest performance, and suggesting changes. The recipient would listen, question, trial the changes in training sometimes adding their own contextual adjustments. The net result would be a better performance.
I have been informally coaching executives for over 30 years, and before getting into any detail I always ask, why they want to be coached: