regrets

How much of our present goes by our past regrets?
Do some of us live like zombies carrying loads of past till eternity?
Can we live now without corrupting our life with regrets of the past?
Time machines are a thing of fiction and, why don’t we get it?
Why don’t we accept it and move on?
Why are we so closed and not open to the present?
Are we living life on regrets of the past?