"I'm going to pay attention to the view through the windshield and not be looking in the rear view mirror." A client was reflecting on his intended response to his former wife's desertion and decision to divorce. He used this automobile metaphor to describe how he planned to approach his future ... by looking ahead without undue preoccupation with their past.
Acknowleding his need for a 'clean windshield' , he further decided that he could not navigate life relying primarily on the mirror of the past. As a therapist, I think it's necessary to ask whether we can learn from 'what's back there' while avoiding 'living in the past'. A former church member learned to drive when in her 80's. At her funeral, I said that her always avoiding the reverse gear was the perfect description for how she had lived.
The Danish theologian, Soren Kierkegaard, claimed that life could be understood only by looking backwards but had to be lived looking ahead. Maybe that is a good approach. Avoiding 'learning from the past' risks head-on collisions in the present. Car mirrors do warn us that "OBJECTS IN THE MIRROR ARE CLOSER THAN THEY APPEAR". Too much nostalgia, a homesickness for the past, can blur and distort reality of the 'right now'. Having once been an academic historian, I have observed many instances when a longing for 'the good old days' led to disastrous conseqences, for individuals and for entire nations. Often for their own benefit, individuals and groups deliberately misrepresent matters from the past. Examples abound in partisan politics, especially around election times.
Maybe the 'meaning' of windshields and rear-view mirrors has to do with balance --- an honest appraisal of the past and a clear view of what is ahead of us.
Satchel