I didn't really have the problem of "habitually" asking Jesus into my heart (just once was enough for me... ) but I wanted to read what the author had to say about assurance of salvation.
Rev Greear has an easy and truthful style, and has no hesitation in presenting his own struggles in this area. This certainly gives him an openness, authenticity, and honesty which IMHO can sometimes be lacking with Christian writers.
This is a good book that presents the process of Christian conversion in a very different light to the traditional evangelical view. It's not "way-out" or "wacky" so conservative Christians should have no problems digesting it. What it does is - and this was great for me - it explains the relationship between faith and works in the process of salvation. It cleared up a lot of questions in my own head about where our actions fit into our salvation, and left me feeling a lot clearer about where I stand, where God stands, and where Jesus stands, when it comes to "being saved!"
The book is well written, well thought out, and logical. It's well supported by scripture, and The Bible references are all there so you can check out each reference as you read through. I thought it was a quality read and a helpful volume. Highly recommended.