My experience of life & faith is that God's Eternal one whole Spirit is my spirit which sustains my life!    This particular life in this physical body has life span of around one hundred years.  However, our spirit, i.e., God's Spirit is eternal!
Depending on how you consider your being consist of, yes, your body dies, but not your spirit!  So as your relationship with people in your life do not end as you imagine.  It is a paramount importance who you become in your spirit and helping other's spirit evolve in God.  
I am glad that I can count on ending this life on earth!
I am anxious to return to God in Spirit!!!  :-)  
I imagine I am being selfish to wish to return to God.