After the journey around the world, writing Hope's Edge, I began to see that it is not possible to know what's possible - and therein lies our freedom.
My children threw me a life line: "Return to your roots - food - and rewrite your first book, Diet for a Small Planet." I learned that if I could just show up, in this case, if I could just get myself out of bed, get to the computer in my tiny office at MIT, and start writing, help would start arriving.
For me, just showing up for the traveling and writing gave me the power to overcome my fear of fear.