"Some talents need direct influencing, some need for you to stay out of their way, the problem is they both still need to be schooled". ~dojo
A really good coach....
*...knows when to stay out of the way.
*...is selfless, empathetic, and sees your strengths as much as your weaknesses.
*...should be like an effective shadow
Coaching and writing for comedians is not an easy thing to do. As a matter of fact it's darn near impossible. Which is precisely why so many that try fall short.