Ron Shaich, founder and CEO of Panera Bread and president of the Panera Bread Foundation. (CNN Photo/Courtesy Panera Bread) by Ron Shaich (CNN) — I thought I knew a thing or two about hunger. I’ve met thousands of people who struggle to feed themselves and their families, visited dozens of soup kitchens, food pantries, homeless shelters and food banks, and worked closely with nonprofit organizations like Feeding America in developing five “Panera Cares” community cafes with no set prices. I really thought I understood the scope of the problem. But let me tell you something — I had no clue. My SNAP Challenge last week taught me that merely observing someone else’s plight does not hold a candle to consciously altering your habits to better understand what it might be like to live someone else’s life.