We have to develop the practice of doing this, yes, that this may be the last time I see you. It was very helpful because I did this with my father as I never got to see him again. I usually try to imprint them in my mind and give them a Compassion/Lovingkindness wish and say, "This may be the last time I see you," and wish them well. Everybody has a different way of doing it and that's how I do it. This may be the last time I see you. It reminds me to give them a wish and to perhaps accept it more if I don't get to see them again. It certainly helped me with my father.