If that is the case, do not be discouraged from trying next time. Signs of fear are paleness, shaking, muscular tenseness, and difficulty speaking. Students who are extremely afraid will scream, run, or become combative. You must identify fear at its earliest stage and act quickly to alleviate it. Otherwise you risk letting that fear escalate into panic.
Diversions can, at times, prove helpful.
One of my students is afraid of dogs. I have encountered students who are fearful of orientation and mobility lessons. One of my more recent students, during her first lessons with me, cried through every one of them. She was angry with herself for what she thought of as her previous failures to learn from other instructors, and she was afraid that I would be angry and impatient with her. The whole subject of orientation and mobility to her was associated with failure, anger and frustration.