When we honor the memory of the positive experiences of our pasts, we recognize the great parts of our lives that helped shape and mold us for the better. 

We must also remember the negative happenings of our pasts, and use them as learning experiences, so that we know what not to do in our present, in order to produce the most positive future for ourselves. 

Keeping positive entities in our lives in our present is also necessary to cultivate a more positive forthcoming. :)