Why Small Life?

One of my favourite movies is "You've Got Mail" ,a comedy-romantic.there's a scene I love in this film which cathlyn(Meg Ryan) is writing an email for NY152 the boy she loved and has become familiar in a chatroom(Tom Hanks),she writes:I lead a small life,ok valuable but small,sometimes I wonder do I have it because I love it or because I haven't been brave enough.I do love these sentences.