Response to class exercises

The past few weeks in art therapy class have been quite eye opening for me. I consider myself a pretty creative person and thought these exercises were going to be super easy for me. Boy, was I wrong. With each exercise, I noticed that I am over thinking it every single time. My brain has become so over analytical (partially due to the analytic skills I have been building in my classes/internships and partially because I am a naturally introverted, thinker type of person) that I struggle to just let go and go for it. This has been pretty eye opening for me not only on a personal level, but on a professional level as well. I could be doing art therapy exercises with grown male and female veterans someday at the VA. Will they be over thinking the exercises I give them? Will they be self conscious and struggling to just let go? I'm really glad that I am being made aware of these feelings now in that someday I will have a better understanding of the clients experience.