I am an attorney: nothing in this post should be considered legal advice. I am an experienced intellectual property attorney and a registered patent attorney.

You have a few options:

1) You could try to register a trademark for the name of your program, if you just want to make sure that competitors use a different name.

2) You could try to patent the method of your coaching program.

3) You could register the copyrights on all your coaching materials so they can't make direct copies of them.

4) You could include nondisclosure/noncompetition language in your coaching program contract so you can sue any clients who re-use your coaching program materials for their own benefit.

I have worked with therapists and life coaches on similar matters and would be glad to discuss it with you on a call.