As a wife who was helped to start waking up by her husband, I agree that a JW usually has to become angry about something/s in order to even THINK about hearing/reading anything critical of the borg. Finding the trigger is the key.
All my life I had seen and experienced unloving and unjust behavior by elders/servants but it wasn't until OTHER close family members were terribly mistreated that my blood started to boil enough to take an honest look at my religion. Hubby waited patiently and asked me viewpoint questions rather than TELL me facts.