Yogas Citta Vritti Nirodhah

this is the second sutra from the first chapter of Patanjali's Yoga Sutras.
Citta = mind/psyche Vritti=modification/control Nirodahah = cessation/restraint

This is the very definition and basis of Yoga. It means that "the cessation of the thought waves is yoga".

If you can control your mind, you control everything. There is nothing wrong with the world; you can make it a heaven or hell according to your mindset .