He reminds us that the Holy Spirit lives in everyone who believes and talks a lot about what we should do about it, "The way of the Spirit is not a gentle downhill grade. Often, walking with the Spirit is an uphill trudge through all sorts of distractions and difficulties" (page 93).
If you want to be challenged in your faith and if you need a reminder that God is actually living in you through his Spirit, I encourage you to get a copy of this book!
One of the most powerful parts of the book that has stuck with me is this one: "To submit and give up everything truly is radical and terrifying. However, when I think deeply about it, walking in my own wisdom, contrary to the Spirit's leading, is even more frightful" (page 126).