If you are going to live a long time, one of the challenges is dealing with
loved ones dying. King David was one of God's all time favorites--a poet,
a warrior, and King. But he had one big sin--he lusted after Bathsheba.
He arranged for her husband to be sent to the heat to battle in hopes he
would be killed. He was. David married Bathsheba and she became pregnant.
The prophet Nathan confronted David with his sin. Even with his
repenting, Nathan told David his child to be would die.

David prayed, fasted, and wept for days. But the child died anyway.
He then took a bath, got dressed, prayed, and had dinner. His friends
asked why he no longer mourned. David said that when his child was
ill he hoped God would have pity on them. But now he is dead there is
nothing he can do for him. (So he went on with his life.) David comforted
Bathsheba and they had another son, Solomon. Solomon did quite well.
Thus God apparently was pleased with how David handled mourning for
his son.

When has one mourned enough? I see a lot of people feel guilty if they
don't continue mourning indefinitely. Religious traditions can be very helpful
in prompting us to do intensive mourning and giving us mutually agreed upon
criteria for when we have mourned enough. Jewish traditions in particular are
very precise about mourning requirements and are a good example of
very helpful mourning traditions.

Jewish law provides for very loving care of the body before burial but no make up,
embalming, or attempts to make the person look lifelike. The burial follows soon
with a plain wooden coffin (so there is no distinction between rich and poor and there
is no attempt to attempt to prevent nature from decomposing the body).

Congregants and friends then prepare a meal of recuperation that starts seven
days of intense mourning at home. Friends visit frequently and provide support
and prepare meals. After the seven days of "sitting Shiva," family members can
return to work or school but not engage in entertainment for thirty days after the burial.
They pray daily with at least ten other Jews to have community support in their loss.
When mourning your own parents the mourning lasts for eleven months. After that,
there are special prayers on the anniversary and four holidays a year. 

In David's time many babies died in childbirth or shortly after childbirth. To prevent parents
from frequently being in mourning, Jewish law determined that a baby was not a person until
he or she was 30 days old. Hence while David must have been very grief stricken,
there were not mourning traditions for his son. Today with children rarely dying in childbirth,
Jewish laws have begun to recognize and provide for grieving for these deaths as well.

Whatever your religious or cultural traditions, mourning traditions can be very helpful
in knowing how to mourn, and in knowing when you have mourned enough.