The sun dropped below the mountain at 2:42 tonight. That's one minute more sunshine than we had yesterday. The shortest day has passed, the days are getting longer, and my friends with Seasonal Affective Disorder are happier than one might imagine, since we've only gained a minute. Why? Because things are going in the right direction for them. A minute or so each day adds up, and the future is getting... brighter.
Continuous communication improvement is like that, too, except that we build on and keep our gains. Just like the change in seasons doesn't mean a large immediate increase in daylight, being on the path of improving communication doesn't transform your world overnight. But it does transform your world. Imagine what a difference you would experience over a year if you improved your communication just a little each day.