In 2002, Jonathan Safran Foer made his literary debut with the novel “Everything is Illuminated,” which quickly became a bestseller. His next novel, “Extremely Loud and Incredibly Close,” was also widely praised. Both books were made into Hollywood films. His new novel “Here I Am,” is a study of things falling apart: a marriage and a family, plans for a bar mitzvah and, on a more global scale, the nation of Israel. But it’s also an examination of how people hold it together as they struggle with the real, and imagined, pressures of everyday life.