TANYA CHAPTER 31 Part Nine "Joy for Every Body" Maintaining happiness; protecting soul joy from bodily frustration.
TANYA CHAPTER 27: Part Five "Get Shorty" How spiritual shortcomings were specifically designed for Divine satisfaction.
TANYA CHAPTER 19: PART FOUR Learn how to lovingly illuminate darkness; bringing awe in as well. http://www.chabad.org/library/tanya/tanya_cdo/aid/7898/jewish/Chapter-19.htm