Ram Kishan Chauhan completed his degree in Aeronautical Engineering from Punjab Engineering College Chandigarh in 1968. He joined DRDO in 1969. He served DRDO and the Ministry of Defence in various capacities from scientist A to G. He contributed in areas of prototype development of aero engine, quality control, airworthiness of aircraft and aircraft accident investigations. During his service time, DRDO sponsored him for M Tech studies from IIT Kanpur. He retired as Scientist G and Director from DRDO. Post retirement, he is serving as a professor at Amity Institute of Aerospace Engineering, Amity University, Noida Uttar Pradesh. He is fond of Urdu poetry but his main interest lies in intriguing human behaviour. It always puzzled him how the human nature works. The guidance of spiritual masters and his understanding became the compelling reasons for sharing his experiences for the benefit of readers through writing this book. This is his first attempt at writing a book. Teachings of great religious leaders have deeply influenced his life. Understanding the ‘Nature of Mind’ will help the readers and the aspirants to avoid pitfalls and traps in their journey of spiritual life.