Billionaire Sam Walton says he's come to terms with his cancer, is feeling good and just wants to "enjoy the days we have left." The 72-year-old founder and chairman of Wal-Mart Stores told a crowd of about 400 in Bentonville, Ark., about his struggle with multiple myeloma, a blood disorder that results in softening of the bones. Walton said Friday his cancer was detected about a year ago, soon after he was injured during a hunting trip. He has since undergone chemotherapy treatment. Before, he said, he couldn't lift his arms, had trouble shooting a gun and had chronic pain in the ribs. Now he hunts quail and conducts business as usual. He has given up tennis, he said, but still flies his own plane. "I've never felt better before in my life," he said. "I am well enough to hassle the folks at the office." Walton told the packed auditorium he remains an "optimist at heart. I just think that some bright person will be able to help me in time and if not save a lot of other people," he said.