In today's Gospel reading from Luke 9, someone said to Jesus, "I will follow you, Lord, but first let me say farewell to my family at home." Jesus answered him, "No one who sets a hand to the plow and looks to what was left behind is fit for the kingdom of God." I don't think Jesus is saying that saying farewell to your family first is not appropriate. The main point he makes is that if you want to follow him, you must be resolute and not hesitate. It you want to go straight to heaven, then stay on that path and not wander off, take breaks, or get yourself distracted.