Dr. BJ Miller is only 40 but he thinks about death a lot. He is the new executive director of the Zen Hospice Project in San Francisco and a palliative care specialist at UCSF Medical Center. He is also a triple amputee, co-founder of a tea company, owner of a farm in Utah and a newlywed who still looks like the Ivy Leaguer he once was. "I have no fear of death," Miller said. "I have ....