The first part of this book was good and helpful, though the writing is a bit disorganized. I really appreciated Allen's treatment of our culture of striving and the damage it does to us. I wanted to love this book, as I find the topic incredibly important in our culture. But I found the second half, in which Allen does her own interpretation of several passages of the Gospel of John, quite problematic for several reasons.
First, her reading of these passages is quite limited, with almost no footnotes of scholarly interpretation, and no consideration that the writers might not have had our particular modern situations in mind when they put these words on the page so many years ago. She leaves no room for other readings of these texts, and in some cases, I think her interpretation moves beyond "creative" to "wishful thinking." It's clear that Allen and I approach Scripture in different ways, but also that she and I differ on our understanding of God's hope for the world. Allen is summarily focused on "saving souls" in this book, as if God's call on our lives is to believe with all our hearts, and that's it. I believe God wants us to believe, but also that God wants us to live so that the world looks more like the kingdom, which includes working for justice and peace in the world. Allen leaves this out entirely.
Second, Allen seems to assume that all women in her audience are having a similar experience. The problems she addresses in people's lives are those usually experienced by particularly privileged, largely middle- to upper-middle-class, largely majority demographics. And, perhaps because of the scriptural interpretation to which she ascribes, the assumption seems to be that women reading Allen's book will be in complimentarian heterosexual marriages (or praying for such, if not already there).
Third, and perhaps most problematic, while critiquing our self-help culture, Allen seems to suggest two things that I find dangerous, one theological and one psychological. The theological issue is that she seems to suggest that any suffering we experience is caused, intentionally, by God, to teach us a lesson or make us rely on God more. I reject that a loving and merciful God causes suffering in our lives. Yes, God is with us in suffering, but it is our own brokenness and the brokenness of the world that causes it. God does not cause children or spouses to die, cause natural disasters to destroy homes, cause racism, cause sexual abuse, etc.
My biggest concern, however, is that Allen seems to suggest that, whatever issues with which we are struggling - psychological, emotional, or otherwise - can be solved by prayer. Of course prayer is helpful in all situations, but to suggest that someone can heal their own mental illness without the help of psychotherapy, to suggest that (like Allen's own story) an eating disorder can be overcome without assistance, is dangerous and puts struggling readers at risk. Coupled with her assertion (through an entire chapter) that we should actually be longing for our own death so that we can go to heaven to be with Jesus, I could see Allen's book encouraging someone who is clinically depressed to end their own lives.
My suggestion would be to read Part 1 of Nothing to Prove, because again, I found it helpful and encouraging. But be very, very careful if you decide to wade into Part 2.