All my days are ordained before I was born?

> Psalm 139:16 (KJV) Thine eyes did see my substance, yet being > unperfect; and in thy book all my members were written, which in > continuance were fashioned, when as yet there was none of them. *My understanding of this verse:* God has written down the process of how our bodies will be formed. Thus, referring to ***embryology***. > Psalm 139:16 (NIV) Your eyes saw my unformed body; all the days > ordained for me were written in your book before one of them came to > be. *My understanding of this verse:* God has written down how many days I should live on this earth. Thus referring to ***predestination***. This translation is very hard to digest for me. How should we interpret this verse? I myself cannot accept the NIV way of translation because that would put God responsible for everything in my life, whether good or bad, and that even my destiny of going to Hell or Heaven is predestined. Some writers like Rick Warren prefer this NIV way of translation. What is the view of Mainstream Christian Denominations on this verse?