The Gospel presents us with Our Lord's prayer that he and his followers might be together in heaven. His prayer is meant to be an example for us. We must pray that we and our dear ones might be together in heaven.
I, for one, run into a difficulty there. It is this: do I believe firmly enough to utter this prayers whole heartedly?
When you or I run into the weakness of our faith, we might turn to that story in Chapter Nine of Mark's Gospel. A man had a son who behaved irrationally, like throwing himself in the fire. When the man begged Jesus to rid his son of such abnormalities, Jesus replied that he could cure the son his his father believed.
The father said, "I believe, but help my unbelief." So we must pray as well, saying, "I do live, help my unbelief."