Fear and worry are born of the imaginings of a mind that is influenced by worldly conditions. They are rooted in craving and attachment. In fact, life is like a motion picture in which everything is constantly moving and changing. Nothing in this world is permanent or still. Those who are youthful and strong have fear of dying young. Those who are old and suffering worry about living too long. In between these two are those who crave for merriment all the year round.

Joyful expectations of the pleasant seem to pass off quickly. Fearful expectations of the unpleasantcreate anxieties that do not seem to go away. Such feelings are natural. Such ups and downs of life play with an illusory self or ego, like a puppet on the string, but the mind is supreme unto itself.

The training of the mind, otherwise known as mental culture, is the first step towards mental unrest. The Buddha had explained:
"From craving springs grief,
from craving springs fear,
For him who is wholly free from craving,
there is no grief, much less fear."

All forms of attachment will end in sorrow. Neither tears nor long goodbyes can end the transcience of life. All compounded things are impermanent.

..taken from a book "How to overcome your difficulties.".