Humans didn't always stick to measures of time so ardently. But with the advent of the pocket watch and later the wristwatch, all that changed. Now our culture calls for us to run (or attempt to run) a much tighter ship time-wise. So while everyone has days here and there where they find themselves running a bit late, if the issue has become chronic for you, that's a serious sign that you're overworking yourself. And it can have repercussions beyond simply missing opportunities and experiences -- it can affect how people view you. If you're constantly late, people will likely start to think of you as unreliable and inconvenient, and that could mean missing out on even more.