The first book covers all the times that the LORD has interviened in my life and the experiences where he has directed my path.
It shows the direct Devine interaction and suggests that if following your dreams and thoughts can lead you down a much better path in life.
The second book discusses the connection that ties dark depression to the influence of the principalities of evil trying to intervien in your life and cause as much destruction as possible to you.
It does not mean you are possed, just that you are being demonically attacked!