I absolutely agree with the discussion above. But also would like to add another perspective - based on my own experience and witnessing experiences of those around me, I have found it wise to take a very grounded approach to mental illness and mental illness-like effects experienced on the spiritual path. I think that the idea that you're under attack from the dark forces only makes a person feel more freaked out when already unstable. I also found a tendency to search solutions within the spiritual domain when psychological therapies can hold a lot of solutions but can be overlooked when the problem is considered spiritual.