We all know people who make us feel better, those people who when they walk into a room make you think ‘I’m so pleased she’s here; I know we’ll have a good chat.’ Then there are their opposites, those people who if you see coming towards you on the street make you quickly duck into a shop until they have gone past. Oprah Winfrey, who often says things which make sense, has a good phrase for these different sorts of people. She calls them radiators and drains. Radiators radiate good things: warmth, kindness and enthusiasm. This lifts your mood and makes you feel happy. Drains on the other hand suck the good stuff away. Their negative and often self-absorbed attitude ends up draining your…