Good plan to tell your counselor. One thing at a time. Maybe explore with the therapist why you don't want to tell anyone else.
Also, just because you have decided and he has given you an answer, doesn't mean that's it. I will bet money that once he finds out you are serious, he will change his tune. (That doesn't mean he will become willing to get help, it means he will promise you anything to get you to stay.)
L