We can make almost anything an idol in our life. We can turn a good idea or healthy expectation into an idol.
Has remaining "emotional pure" become an idol in your life? Are you more concerned with saving your heart than you are with becoming sold out for Christ?
It's easy to take a good concept, like saving your heart, and turn it into some way more than God intended it to become.
It's easy to look down on others who don't hold to your standard. But what's the difference, pride is still sin.
When people read my book I know it can open their eyes and help them see a new way of relating to people. But my book is not the "main thing". A single Christian's main goal should not be to remain pure emotionally.
The Main Thing is a pure, passionate, loving, all encompassing relationship with our Lord, Creator, and Savior! Make that your main goal. Putting anything above that is idolatry!