TANYA CHAPTER 38 Part Two ! Do Mindless Mitzvahs = Body without Soul! If one performs a Mitzvah without any concentration, intention or mindfulness...
TANYA CHAPTER 27: Part Six "Liberating Restraint" Harnessing the power of restraint uniquely catalyzes divine satisfaction.
TANYA Iggeret HaTeshuvah Chapter 10 Part Three "Achieving Wellness of Soul" Achieving Emotional Equilibrium; Balancing Joy and Seriousness !