Any deep spiritual practice is sadhana. A sadhana could be yoga, meditation, mantras, Karma yoga or selfless service, bhakti yoga or singing and many others. Any deep practice eventually provide the same results. The goal of every yogi is to reach samadhi or enlightenment. The validation for deep yoga practice is Nada or tao. "It’s easier to go with the current rather against. Better yet, more important to tap into feeder of tide than escape." "The Sadhana continues. Wake up every morning, dedicated to Swami Vishnudevananda, founder of Sivananda ashrams." “Sadhana (practice) burns the veil of ignorance. Then the Self reveals Itself in all Its Glory”. - Sivananda. “Those who know, speak not. Those who speak, know not”. - Anonymous. "It’s important to reverse the path sometime to test human qualities like humility, compassion, etc. For Vegan, eat meat. Become non-judgmental." "Truth needs to be present, if we are talking about consciousness." "Buddha didn’t meet a person he didn’t like. To realize that, he was to leave the palace and experience compassion." "The best service: Guru. When you surrender your life for a teacher. Vishnudevananda, founder Sivananda yoga centers, worldwide." "Abstaining from the opposite sex and the shadow is part of the sanyasi who wants to live in God and surrender life." "Non dualistic is the path of tantra yoga. The shiva and the shakti. Accepting the shadow. All part of the whole yoga." "Superiority or inferiority is an illusion. The key is to be neutral and content. Then focus on opportunity at hand." "Nada is silence or sound of God. This earth we talk on, the food we eat, the world we live in is Shakti, the mother." "The gurus clear our paths, move us to where we need to be, so we can perform spiritual sadhana. No time wasted." "Adi Shankaracharya, a guru of gurus taught the meaning of spiritual practices by going deep within, find God." "The gurus and disciples relationship is the foundation of sadhana. A deep practice to gain higher knowledge and love."