Plan B really is an encouraging book. I would definitely give it to anyone dealing with tough circumstances in their life. Wilson does a good job of giving Biblical and real-life examples to support his topics/chapters. If I'm honest, though, I felt like there was too much time spent re-telling Biblical stories. That may sound like horrible criticism for a Christian book, but there's a fine line between content that makes a good sermon and content that makes a good book.
Honestly, though, I'm not sure why I'm coming across as critical as I am, because I found much of the book to be very encouraging. My favorite line of the whole book is:
"Your dreams may not be happening, and things aren't turning out the way you expected, but that doesn't mean your life is spinning out of control. It just means you're not in control."
That one's a keeper!