[Closed] Executive Coaching... anyone a practitioner

I need/want a career change.
Marketing isn't my thing anymore (never has been tbh) but I'm good when people need help with stuff. That motivates me and the results tend to be a win/win every time I do it.
So thinking about how to use 15 years' experience in the commercial world alongside my natural skills, executive coaching seems like an appropriate option.
Anyone got experience of being a practitioner?
Is it a proper profession or full of snake oil salesmen?
What's the process to get qualified and start off down that road?