Show, don't tell, is one of the most important things a writer has to do, to build a story people will want to read.
Instead of saying the main character is a good man, we are urged to show him taking an old lady across the street, helping children, saving people's lives.
But how can you do that in social media?
The first way is through case studies, the classic business way to show the impact of what you do rather than simply say it. A case study will focus on a real life example of someone using your product or service.
The second way, if your social media is more personal, is for you to give examples of what is happening in your own life, describing how you tapped your fingers on the table as you waited to hear news of a big sale, rather than saying you were nervous.
The third way is to add depth to the showing by providing additional detail. If you won that big sale you might say you jumped higher than you ever had before the moment the news came in.
Showing, not telling, is a critical part of storytelling. If you are looking to build social media engagement it is one of the techniques you can use to supercharge your output.