The personal trainer helps someone who has never done the practice to get started. Helps them to learn the techniques. To stay motivated. The personal trainer says, "Be here at 6pm and give me a hundred pushups."
The coach works with people who are passionate about the practice and want to get better, to overcome weaknesses. They help them actualize their potential. The coach says, "Great job on last weeks pushups. Your thighs are underdeveloped so let's work on those this week."
The mentor works with people when they need them. They build lifelong personal relationships. They inspire, connect the dots and build a bigger picture. The mentor says, "I have enjoyed watching you overcome challenge after challenge this past year. How were you able to work through pain and failure along the way? What are you going to focus on this year?"
Each of these requires a different level of time and energy. Each has its own function and purpose.
Do we need more personal trainers? Definitely, a lot of people don't know how to do the practice or how to get past their own personal obstacles.
Do we need better coaches? Definitely, a lot of people have their own practice, but either feel stuck or don't see how it all fits together.
Do we need more mentors? Of course. We need people who are generous with their time and energy, people who are willing to be present, to listen and to nudge.
The personal trainer isn't doing their job if they are acting like a mentor. A mentor who gets wrapped up in the specifics and tries to control outcomes and results isn't a mentor at all.
Which are you trying to be? What does your student need?