If you have not discovered your unlimited potential in this life you will die, and your soul will go to the unseen state awaiting its chance for another birth. This is the gem of knowledge known as Reincarnation. You are a child of God because you come from God and you can return to God. As God's child your destiny is to grow up to become God as Christ is God or as Buddha is God. To walk the same path the Buddha walked perfectly, you must renounce all attachments.
Attachment leads to suffering.
All that is subject to arising is subject to cessation. To transcend suffering one must cease the cycle of arising and cessation. Of birth and death. You become One with the Absolute Awareness. You return to your true source, you return to The Uncreated God.