Don't Look Back lyrics

Dont look back to the days of yesteryear,
You cannot live on in the past,
Dont look back.

And Ive known so many people
That still try to live on in the past,
Dont look back, oh no.

And if I could call back all those days of yesteryear,
I would never grow old and Id never be poor,
But darlin, those days are gone, oh yeah.

Stop dreaming
And live on in the future,
But darlin, dont look back, oh no,
Dont look back, oh ?

Submitted by Guest

What do you think is the meaning of Don't Look Back by Van Morrison?