Too often people are 'forgotten' about when they become Christians, and their past is ignored. This is all too true especially where the society is 'wealthy'. Coming from Africa, I've experienced evil spirits first hand, tormenting me and other people I know. I've witnessed numerous deliverances, which more conservative Christians have tried to dismiss as "behavioural issues" rather than evil spirits.
If you are a 'new' Christian, please discuss with a more mature Christian before buying this book, as you will need guidance, conselling and support. This is not something to tackle alone.