I have been writing a series of articles on the ethical base of yoga, known as Yama and Niyama.  There are five principles of Yama, and these instruct a person to restrain his or her conduct in order to remain in harmony with the external environment and society.  The five points of Niyama are practices that a spiritual aspirant adopts in order to get internal harmony and purification.  My latest article in this series is about achieving thorough contentment which in yoga is known as santosha or santos’a.  You can read the article on this site by pressing this link.