'We're eager to get them and so pleased when we do, but then we utterly fumble their receipt.' So say Brett and Kate McKay in their article 'How to accept a compliment with class.' But why is it so difficult to accept something so good? A few weeks ago I spent a weekend with a friend in Suffolk. She had bought a week in a cottage there, in a charity auction, and had invited all her 'best women friends' to share it with her. My friend is a generous, big hearted and kin