When you said "step by step" it brought a few things to mind:

There are a lot of hits when I google step-by-step how can i forgive others

A book that i have found helpful and takes a "phase by phase" approach is:

Amazon.com

If you are interested, it is available new and used on amazon, and at BookFinder.com: New & Used Books, Rare Books, Textbooks, Out of Print

ISBN is 0-02-032230-5