The intro part is very simple. It's just this:

C  Em  G  D

This pattern is continued when she starts singing.


 C                                           Em   G   D
I'm always swimming against the flow of the tide.

Kissing the life into something that's already died.

 Bm       D
I've been driving forever,
 Bm       E
I'll let go.
 Bm     D                    C    Em
i dive into the river, and flow. 

Then it's the same the rest of the song.