It is not very important how we treat present. Past is gone and not much is going to  change because that which is gone is gone for ever.
Foremost thing is how we scan past, learn from it and get ready for the future.
Both ends of present- past as well future; are endless.
We must train our wisdom in the light of past with an eye on future- not to repeat the mistakes of past and to recreate what appears to be lost and discover and invent the new pathways .