Born to the Leong family in Kuala Lumpur, a federal city in Malaysia was named Sai Woh, meaning World Peace in 1945. The vowel Douglas was added to facilitate ease of address. He is a retired social worker with a political bureau and a retired businessman. 

He studied Arhatic Yoga with Grand Master Choa Kok Sui, founder of Pranic Healing, Quantum Touch, Reiki, and other healing techniques from American, Western and Asian teachers. He was trained in Pyra Vaastu by the modality creator, Prof. Dr. Jiten Bhatt. He studied Mantra Healing, Sache (Tibetan Geomancy), and Yuthok Nyingthig with Dr. Nida Chenagtsang, who is an internationally renowned master of Traditional Tibetan Medicine and holder of the Yuthok Nyingthig spiritual lineage.

 In the year 2003, he had a calling and was spiritually inspired to share his knowledge to teach the various healing methods. In the year 2004, he retired from the business world to focus his journey on the spiritual path and continued to teach healing techniques. During this period, many students testified their joy with regards to the good results of the simple healing techniques. As the group grew, the Life Force Energy (now known as Holistic Metta Healing) Community was formed, to further enhance knowledge on HOLISTIC HEALTH through Traditional, Complementary and Vibratory methods and medicine. 

In witnessing the many faces of joy on the practitioners, he aspired to Create a Healer in Every Home, helping to bring out the innate healer that exists in all of us. He felt that in this way, our compassionate nature will be strongly cultivated; to help the unconditional love within to grow. 

He was ordained as a Tibetan Yogi in the year 2006, and since then has placed his focus on the Tibetan Ngakpa yogi practices.