A        G        A        G

[Verse 1]
A                                  G
I thought that my first love would be my wife
       A                               G
but in junior high she moved away from here.
    A                                   G
And I thought Johnny would always be my best friend,
          A                        G
I haven't talked to him in fifteen years.

[Pre-Chorus]
A                                        G
Back when I had those fights with my old man,
  D                            D
I never thought he'd be an old man.

[Chorus]
      A                     G
And I didn't know all those years ago
        D/F#                  G
how the years would go flying by.
          A               G
Thought I knew it all but I was wrong
      D/F#                  G              A      G
and I didn't know, I didn't know it at the time.

[Verse 2]
  A                                    G
I never thought good jobs were hard to find
       A                    G
'til I let my pride cost me one.
  A                                 G
I never thought my whole life would change
A                                   G
'til I heard the doctor say I had a son.

[Pre-Chorus]
  A                               G
I never really thought that I was lost
D                            D
'til I heard my dying mother sing 'Old Rugged Cross'.

[Chorus]
      A                     G
And I didn't know all those years ago
        D/F#                  G
how the years would go flying by.
          A               G
Thought I knew it all but I was wrong
      D/F#                  G              A      G   D/F#  D    G
and I didn't know, I didn't know it at the time.

[Outro]
                A                    G
Oh, I thought I knew it all, oh, but I was wrong
      D/F#           G                     A
and I didn't know, I didn't know it at the time.
  F
I didn't know, didn't know, didn't know
A                    G                 A
  I didn't know, oh, I didn't know.