Sorry.

Anything can bring you back to the past. Books, musics, words, persons, anything. Rarely a  flashback, but most of the time, it just stays there, making you smile or regret or weep for the things you'd never been done, steps you never had taken, decisions you never made, things you left for good.

places you didn't have the chance to visit. hands you didn't shake. apologies you didn't say.