Prevent clients from panicking by keeping your room cool. Overheating clients can misinterpret a rise in room temperature as the onset of a panic attack.
Deductions impress clients, but incorrect deductions can be disastrous. Deductive reasoning has its place in therapy, but only as a means of generating hypotheses on which you can work with clients.
Therapists should be aware that clients may see them in a very different light. They should also be aware that these impressions are a matter of perspective and there may be fewer real differences than either therapist or client imagines.