PistolPete:
This is an excellent topic you have raised. Many Witnesses come to this website, or others like it, in search of truth and freedom from the Watchtower. Something that seems to be lacking is support or definitive direction to help with experience of having reality crash all round you.
It is truly a serious thing, but I think even more for those waking up to the truth about the Truth. One of the reasons for this is many Witnesses right now are like myself - not only born in, but raised as a Witness during a time when Watchtower publications spent a significant amount of time trying to prove other belief systems as false.
A psychologist once mentioned that when a person's belief system crumbles around them all belief systems crumble. This can lead not only to nihilism, but also neurosis. Witnesses are already primed for this. The Watchtower destroys all other belief systems. So, once the world according to the Watchtower has dissolved as well a person may believe that life is pointless or is just good for experiencing selfish desire.
PistolePete, I recommend Dr. Viktor Frankl's book Man's Search for Meaning. It really helped me out of the mess I went through.