This song, "Say Goodbye" by S Club 7, definitely suits this fanart. People and things come and go, whether you're leaving your friends, your old house or anything old behind. Every time we leave something behind, we open up a new chapter in this book called life. Farewells and goodbyes are the hardest things to do and say but we'll always remember our experiences and friends in many years to come when we look back on them.
Unfortunately as the saying goes, "all good things must come to an end".