Nigeria: the country that loves to overachieve (Image credit: peeterv/Getty Images) Africa’s most-populated country is a cultural powerhouse. But’s what’s behind the nation’s drive to succeed? I In a lifetime of feverishly competitive Scrabble-playing, I have only been defeated by six earthly beings. Growing up, my mother’s nickname for me was “speedometer”, and I began teaching myself German at the age of nine in order to catch up to the 10 languages my parents spoke between them. For Nigerians like myself, a competitive streak is as natural as spicy jollof rice at a wedding. In fact, excelling in all circumstances is so deeply entrenched in the Nigerian psyche that the…