Happy monday Ch 18. http://nitaaiveda.com/Shrimad_Bhagavad_Gita/Gita_By_Acharyas/Gita_18_Moksha_Yoga.htm Yoga The Yoga of Liberation This chapter explains the essence of the entire Gita. First Shri Kr 

i) surrendering unto him
ii) practising the nine limbs of bhakti (navadha bhakti), and
iii) accepting the shelter of bhava-bhakti.
The Glories of Chapter Eighteen (Mahatmya)
Parvati said “My dear husband, you have told me the glories of the
Seventeenth Chapter of the Shrimad Bhagavad-gita, now kindly relate the
glories of the Eighteenth Chapter of Shrimad Bhagavad-gita.