To keep track of boxes, pack by room and don't put things from multiple rooms in one box. Label boxes by their room contents (i.e., "Living Room" or "Kitchen") as well as any critical things that are inside (i.e., coffee maker) so that they're easy to find when unpacking. Finally, count the total number of boxes once you've finished packing and make a note on your phone so that you can verify that everything made it on the other end.