[Your life is your message: Finding harmony with yourself, others, and the earth, Easwaran, Eknath, w:Eknath Easwaran, 1997, Hyperion, New York, 0786882662, http://books.google.com/books?id=xKlCo3suzTkC&pg=PA42&dq=Patience+can%27t+be+acquired+overnight.+It+is+just+like+building+up+a+muscle.+Every+day+you+need+to+work+on+it+inauthor:eknath+inauthor:easwaran&hl=en&ei=9UCVTqyUKuKsiAKB1oy6CQ&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDEQ6AEwAA#v=onepage&q=Patience%20can%27t%20be%20acquired%20overnight.%20It%20is%20just%20like%20building%20up%20a%20muscle.%20Every%20day%20you%20need%20to%20work%20on%20it%20inauthor%3Aeknath%20inauthor%3Aeaswaran&f=false] (p. 42) (work originally published 1992)