Hey this is a great song and i was surprised to find the waves of change tab up there so i thought add this! 

   Em  Em7    Am      G       C
e---0-0-0---0-0-0---3-3-3---0-0-0--]
B---0-0-0---1-1-1---3-3-3---1-1-1--]
G---0-0-0---2-2-2---0-0-0---0-0-0--]
D---2-2-0---2-2-2---0-0-0---2-2-2--] Just play this through out.
A---2-2-2-0-0-0-0---2-2-2-3-3-3-3--]
E-0-0-0-0---------3-3-3-3----------]

And when he goes "Often times is difficult" just play Em and Em7.

Hope that helps 

Enjoi

Matt