Emotionally healthy people have ups and downs and can openly admit it when they are unhappy.
By contrast, think of the pressure on JWs to be happy all the time.
To admit you are not happy as a JW is "to bring reproach on Jehovah and his organization," which in the WT world is the worst sin imaginable.
Even admitting unhappiness to oneself often triggers feelings of guilt in a JW.
One of the best aspects of JWN is that we can be genuine.