‘I’m having three birthday parties’, a friend sighed wearily. ‘One for family and a few close friends that know the family, one for the neighbours, and one for my tennis club friends. For my colleagues I’ll bring cakes in for the coffee break, of course’. I was a bit surprised. Why not throw one big party for everyone? Wouldn’t your tennis buddies enjoy meeting your colleagues, your family like to get to know your neighbours? And if you’re so tired at the thought of organizing all this, give yourself a real birthday treat and just take your best friend to the cinema instead.