Gone is the past

The past is gone
From it we are supposed to be torn
Still why over it we sit and mourn
What we have done and said
To it all why do we as though remain wed
Despite the fact that we know the past is dead
This over and over we have heard and read
The past over our present like a shadow is spread
I'm searching what will free me from the past
Then only my soul will rest in peace at last
The present is now and future is vast The present moment to live in doesn't last
The moment is here and the next moment it is the past
Why over my present its shadow it casts
When free of it my soul at peace will be at last !!