" In an effort to teach myself self-restraint and self-control, I decided that until I completed my engineering degree, I would wear only white saris, refrain from sweets, sleep on a mat and take baths with cold water. I aimed to become self-sufficient; I would be my best friend and my worst enemy. I didn’t know then that such a quote already existed in the Bhagavad Gita where Krishna says, ‘Atma aiva hi atmano bandhu aatma aiva ripu atmanah’. "

― Sudha Murty , Three Thousand Stitches: Ordinary People, Extraordinary Lives