Leave only your footprints

We are always leaving a place and moving to the next one. With our departure, a part of us stays within the place we've just left. Sometimes it's something physical, like a book, a pillow or a shirt; sometimes feelings are the ones that stay. It is the second choice that becomes unreplaceable. You can buy another book, but you can never get that feeling that's missing. Instead of that, new ones come to you, and there's one particular feeling that always appears. It's the thought that, when you move on, you must leave only your footprints.