I don't think you can be disfellowshipped from the organization for going to a psychologist (like you can for getting a whole-blood transfusion). However it is discouraged, as people are told to seek the elders for "spiritual help". It might be viewed as a sign of "spiritual weakness" to go to a mental-health professional. (Actually the WT Society's fear may be that such therapists might help the JW to see that being a JW is causing a lot of their problems!!) Maybe other posters with more personal experience can comment on this issue. Gopher
One of the turning points in my unsuccessful 'fade' out of the JW cult was going to a mental health professional to help me figure out why I was so depressed.
I found out why within 6 months.
It was all due to being a Jehovah's Witness.
I have been depression-free and JW free for over 3 years now.