A split in linguistic personalities

I can relate to the feelings of the author of this article very well, about "the identity shifts of people living in two cultures." Having been brought up in Finland, I have a hard time losing the traits that are so synonymous with Finnish culture; shyness, quietness and what other people might perceive as coldness. I would say I'm a different person in my adoptive country, the UK, and the English language and culture changes who I am; more outgoing, talkative and approachable - but sometimes, just sometimes, the Finnish in me shines through... I don't think you can fully "get rid" of your roots (why would you want to?) but you most certainly do, in some ways, develop linguistic personalities!