Just finished reading David Powlison's "Idols of the Heart and Vanity Fair." It's a great article that provides a coherent and biblical understanding of much of human motivation. I am left with a few questions regarding how far he develops the theme of idolatry as it relates to human motivation (feel free to ask me what I'm referring to in the comments, don't want to spend the time here).
But I whole-heartedly recommend it. If interested, download it here.