There should be an outcry in Christendom against such blatant garbage as this book. It is not only a fanciful, Biblically deficient attempt to pit the "fruit of the Spirit" against an alleged army of demons seeking to undermine it. The "fruit of the Spirit" is Christ-like character produced by the work of the Holy Spirit in the life of the Christian. This author focused on making absurd assertions about the kinds and activities of demons. There is no Biblical warrant for making such assertions, nor is there as much information about what the demons are and do as the author purports.
Christians: AVOID! This does not edify but rather invites vain speculations about demonic activities. The Christian's focus rightfully ought to be on God, the things of God, and holy living. This book does not help at all.
Note: This is an especially poor choice of a book to recommend to a new believer just learning the faith. There is no growth in godliness to be achieved by reading this contrived book.