I like resurgam's suggestion to add a disclaimer to clarify your blog's purpose. Something like: " *disclaimer: This information is intended for educational use only. I do not offer personal coaching services." Clarify what your blog is for people, so you can avoid this happening again.

I'm reading a book right now, actually that addresses this very issue of simplicity. It's called "Simple: Conquering the Crisis of Simplicity" by Alan Siegel and Irene Etzkorn. Don't overload your blog with information, keep it simple, so that people who read it, know exactly what your blog's purpose is.

Are you a certified life coach?
Do you offer people your services?
Or, is your blog a resource of life coach websites that you review or comment on?

The more simplified you can make your blog as to what it's purpose and intention is, the less flapback you'll receive from people who read it.