Afraid to Decide

I would like to stop working with one group of clients however I’m afraid to inform them that I no longer want to teach them.

They are really great and I’ve worked with them them for 2 years. Now My goal is to focus only on my premium offer and develop my business in this way.

I’m sure they will be very surprised and disappointed. Right now we are taking a break but we’re supposed to resume our sessions in September.

I think to myself that it’s very unprofessional to quit working with somebody at such a short notice. Isn’t it childish to do what I want to do? Am I at all allowed to do it?