Upasana is the ultimate path of sadhana,which leads the aspirant directly into the proximity of the Divine.The book of practical insight and instruction on the art of worship is meant for all those who ask the questions:How can I discover the ultimate Truth within myself?How can I attain liberation while living in the world? The teachings contained in this book were expounded by two contemporary masters of the yoga tradition.Swami Sivananda Saraswati and his disciple,Swami Satyananda Saraswati.All aspects of this path of upasana,including types and modes of upasana,relationship with the divine,use of mantras and symbols,form and formless worship,tree worship,service and yajna are described.The principles and practices offered here can be used by all aspirants to this spiritual path.