Best book on psychic self-defense, covering mostly a very specific aspect: acute attack, and not by witch or psychic, but caused by either astral wildlife or involuntary effect made by unsuspecting humans.
Sounds rather like exorcist's, ghost buster's and paranormal investigator handbook on how to stop negativity affecting your life than how to protect yourself from black magic curses, recent or generational, and/or psychical vampires.
It has materialistic and very realistic approach: crossing running water, salt bath, deep grounding, strong magnets, strong noise, light and smell (for now, and educate yourself later, when the bases are covered).
Some psychology on defusing situation if it was caused by interactions with others.
This book provides excellent techniques for removing repeated, circling, obsessive negative thoughts by stating your choice not to have them, replacing them with happy and positive images, again and again, until they left, and using uplifting music as a distracting background.
Occult things, like penetration of the aura by negatives, their attachment, treating points of attachments (very materialistic). Finding and replacing implanted negative massages (core images) that do not belong to you by choice. Revoking permissions, known or unknown, allowing negs to operate. Contacting the great positive force of universe (in prayers or mantras) or higher self (positive affirmations stated in real time), if some religion oriented books do not appeal to you. Making desired come true by imagining and stating it, as a mantra, for months (putting higher self to work) and by following hints given by it. By the way, this can be used for non-material wishes too, like achievement or healing. If you are looking for extension of David St. Clair's Lessons in Instant ESP, here it is.
Author is metaphysic(-ist?), not magickian, so there are affirmations instead of spells, more description how this from the other side mechanics works, who the attackers may be, their types, from where they come, at what conditions, what makes one more susceptible than the others, what to do to become less easy target for them.
The author's other books cover this the other side in depth, and interaction with it. Energy works is in separate book, but it should work as a part of protection program. And while you are here, change white light protection on electric violet flame now. And read the book and website why.
Some reviews expressed opinions that reader should skip the scary main part of the book and concentrate on a lesser banishing ritual, but I don't think so: main measures are threaded within the content, you should cover the basics first. And nothing particularly scary there: just negs taxonomy and another reality description, in its connection to our reality. Some cases from his practice, for illustration.
Book is very dense and detailed, still I would prefer even more in depth coverage. For example, gems and crystals protection - it has conditions for optimal use, this could be described; returning after crossing running water will result renewing of attack - this could be described further; as I read, doing lesser banishing ritual improperly will only make negs furious - what are that critical parts; hereditary and century old attachments are not covered fully, with no solution beyond the same basics and hiring the professional.
I find that this book would be better read after making yourself familiar with author's website, astraldynamics.com, there is a short, essential form of the measures you have to employ right now, and read the book in depth after it arrives. Then you in lesser rush, and already know what to pay attention to.
Don't be repelled away by core affirmation that starts the book: "...I'm safe and I'm free." Agree, some of us are conditioned not to lie. Why would a safe, free and protected person read books on psychic self-defense? Go to p122, Working with Higher Self for explanations why, and choosing another present time positive statement that will be acceptable for you.
Not helpful (this is beyond the scope of the book) for self-help in removing a curse, especially long standing or hereditary, or psychic vampirism. Diana Burney's Spiritual Clearings helps with the first, Utterly Wicked by Dorothy Morrison, same in another way, and hopefully Nita Hickok's Psychic Attack books for the both.
This is the best handbook on issue, with mostly down to the earth, affordable measures.
But unless you are under acute attack or have a pure OCD, they are not helping with the main problem.