>> i could just feel my body sort of slipping away. >> reporter: he makes an extraordinary request. >> will you help be their dad? >> reporter: in this special half hour, an intimate diary of one man's harrowing journey. >> one for good. >> two. >> reporter: it's going to inspire you to rethink how you live your life and how you would take care of the ones you might leave behind. >> "tuesday, july 15th, 2008. dear friends and family, the mist lifts slowly off my