An important consideration is leaving a lasting legacy. Let that be part of your thinking, talking, praying, planning and actions.
http://marriage.about.com/od/familyoforigin/a/familyhistory.htm
http://www.creativememories.com/
http://christianity.about.com/od/christianfuneral/a/funeralpreplan.htm
Will
http://www.crown.org/mat/willplanningkit.asp?&aid=SCHOM
http://www.levitt.com/will.html
Living will
http://www.legalzoom.com/legalzip/living_wills/lw_procedure.html