What does it mean to 'pray without ceasing.' Obviously Paul is not referring to non-stop talking, 24/7 on you knees, eyes-closed or in a prayer posture. But rather, an attitiude of Christ-God consciousness. God-surrendered and devotion to Him at all times in all our ways. Always connected to Him, as God says He never leaves or forsakes us.
"Unceasing in our prayers; praying perserveringly." - 1 Thessalonians 5:17