I'm Not Gonna Miss You (From Glen Campbell's 'I'll Be Me')

This song is for my Mother on her birthday. It's the final song Glen Campbell ever wrote. Campbell suffers from Alzheimers, and can no longer write or perform, and that is the story of this song. At first it's message sounds cold. "I'm not gonna miss you." But its not because I don't want to miss you. Circumstances just make it so I won't be able to. At least, that's my interpretation of the lyrics.