Bhagavad Gita Ch. 18 “Yoga of Liberation through Renunciation” Verses  33, 34,& 35
Lecture discusses three types of Dhruti - Fortitude.  Satvika – Dhruti will make the mind focus, optimize the physiological functions in my body and will give capacity to overcome obstacles.  Rajasika – Dhruti may give me success in life but not happiness & Tamasika – Dhrutii will not let me get out of fear, depression and arrogance.
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