We wish we could live forever with our loved ones. Nevertheless we must undestand that our short, perishable mortal lives which we value dearly are only the begiining for what God has planned for us. This life we live now is only the tip of the iceberg of eternity. Your rod and Your staff comfort me. Nevertheless, there is no one that can can avoid death.
Death is a part of being human, just as is birth.
Therefore Jesus understands the pain and fear of death intimatley. There is nothing wrong with feeling this way, with wishing to avoid death, nevertheless it is important to remember God's neverending love and his will for us. You are not alone in your pain and sifferring. God the Father, and the Son are with you. Jesus, when dying on the cross for our sins set an example for us in following God's will through faith and love.