I try to read the glimpse each day when I get up (and sometimes the night before), and have found the experience helpful. I have yet to develop strong discipline in my practice, and find it easy to get caught up in life for days or weeks at a time. Reading a couple paragraphs (the glimpse for one day) has been like a bell calling me back to myself. I wouldn't be surprised to be reading this book for the next 20 years as my understanding deepens.
Thought provoking and shattering insights to break you free from limiting thoughts. This is a wonderful collection of Tibetan "koans" to free our thinking. I found it shook the foundations of my limited perspectives and made me question the true reason for my human existence. Rinpoche opens our mind to the temporal nature of existence and inspires to prepare for our next existence.