You never change things
by fighting the existing reality.
To change something, build a new model
that makes the existing model obsolete.
Buckminster Fuller

Two souls dwell, alas, in my breast
Each would from the other split;
One clutches, in its dullish lust
Tight to the world with its organs' grip;
The other raises itself forcibly from dust:
High ancestral fields are its quest.
Faust I, Goethe

Old friends pass away, new friends appear.
It is just like the days.
An old day passes, a new day arrives.
The important thing is to make it meaningful:
a meaningful friend- or a meaningful day.
Dalai Lama