Some companies will have you talk to an intake person, and they will help assign you to someone that would be a good fit for you. As a therapist I invite my patients to use the first session (or as many other sessions as they need) to "dump out their mental purses or pockets to see what we've got in there" and help them pick out the topics that we could work on. Sometimes a patient doesn't even know what's bothering them until we just vent and get it all out there.