@tcis,
I have asked myself and others the same question since I was a kid. And I belong to India, actually a place called Allahabad, which is considered to be a holy city, and holds festival known as MahaKhumb, where in many supposedly enlightened seers and sages visit. I am now in my early forties, and have practiced casual yoga since I was in early twenties. I have also dabbled in meditation and tratak. I have also read university philosophy books as a hobby. I some extent I understand relativity and quantum physics, well, not the mathematics but a genric overview that I got through audio lectures and reputed books. I have talked to many people, sages, seers, hermits, and unfortunately I have been taken aback with the kind of ignorant folks these guys are. Most of the time they comes across as rigid people with a belief that what they practice is the sole means of attaining nirvana or salvation. Their lack or should I say disdain of scientific knowledge, closed mindset, belief in their superiority over and other human beings, has all but led me to believe that it's foolish to search for enlightened folks. I did rather believe in science that these overhyped mystic folks. How does it serve me if a person and walk over water, or can tell me things about myself that no one knows? May be they can stake claim as a magician or something similar, but definitely not some one as Buddha. On the other hand, I do vouch for yoga, the kind of energy it unleashes, the boost in the immune system, and other benefits. Some of the prayanamas, when practices even my a casual yogi like me, seems to immediately brings a feeling of happiness. One of the mediation that I practiced was "Sakshi Dhyan", I did say for about 20 minutes for a month, and I was surprised with the impact it had - my dreams were more lucid, I could recall them easily. My concentration, immediately after this meditation, used to boost up and effect used to last for a couple of hours. The practice of tratak when combined with yoga, has lead to improved eyesight and even in my forties I don't need glasses though I am software engineer and spend most of the day in front of laptop. So, to conclude, rather than aiming for nirvana, it's better to build your knowledge through reputed books on science & philosophy and use yoga, meditation to have a healthy life. Soon you will find your own way of achieving nirvana!