I came to this book from two different but overlapping perspectives. Primarily, as a highly sensitive (HSP) person, I tend to absorb people's moods and emotions - and it's rarely the good stuff - so I was keen to see how I can reduce this. Secondly, many of the principles Bloom mentions are similar to those used by shamanic practitioners, which I'm also very interested in.
Bloom runs through some fundamental principles of energy, before looking at straightforward ways to protect and cleanse your energy and the energy of spaces around you. It's all very straightforward and done in a responsible and self-aware fashion.
It's very simple, and anyone could do it. I think it needs practice, but in some ways I was hoping for something stronger or needing something a bit special - but perhaps that is my own preconceptions of what might help to provide psychic protection! Overall this is a very straightforward and helpful book - but time will tell!