Say no to tobacco: The World Health Organization (WHO) and its global partners celebrate World No Tobacco Day (WNTD) every May 31. This year’s campaign focuses on tobacco and lung health. (Courtesy of WHO)Once smokers understand why they need to quit, they can discover how to let go of cigarettes. There are countless ways for smokers to beat the nicotine addiction. Robert Lengkong, 54, started smoking cigarettes when he entered college in his late teens. Many of his peers, including his roommate at his boarding house, were smokers. “There was a notion that if you don’t smoke, you’re not manly,” he said.As he got married and had a son, Robert continued his smoking habit, going through one or two packs of cigarettes a day. He mostly ignored his wife’s advice to stop or at least cut down on cigarettes. At home, he limited his daily cigarette consumption to three or four. But whe...