When I listen to my favorite songwriters, they have such simple melodies and chords. I occasionally manage to stop at the right time, but all too often I keep on going until I have way too many notes and words. But that's just what I do.
It is better wither to be silent, or to say things of more value than silence. Sooner throw a pearl at hazard than an idle or useless word; and do not say a little in many words, but a great deal in a few.