Two people on a bridge;
one looks downstream
the other upstream
Two people, one bridge
two different perspectives;

One sees the water gone past,
laments for its loss
The other sees the water coming
and rejoices at the opportunity

In life, you can lament what's past
and miss the good that's coming
Or you can turn the other way
and seize the moment -
Depends if you choose
to look upstream or downstream...