All that is transient and impermanent arise only to
pass away. They come only to go away. But we invite
them, entertain them, and insist on them to stay with
us. When our hopes are shattered, we grieve and
lament.
To be able to accept the reality of the situation, we
have to attune ourselves to the rhythm of nature.
"Whatever is of a nature to a rise all that is of a
nature to cease". Things come our way only in transit;
and so we have to let them go. It is our hold on them
that brings stress and distress.
One has to practise "let-goism", as a detached
observer of an inevitable law of nature. Then "things"
fade away into the nature of things. The realization
will finally dawn that these "things" are of our own
creation -
or rather the creation of our ignorance and craving.
This insight into the interplay of mental phenomena
brings home the truth that "I" is only a view
and "am" is only a conceit, which bolster up an
imagined Self as "I am".
from: http://lanka.com/dhamma/topsyframe.html