From the HuffPo
#1 Brag. This one can be broken into subsections, such as the "I'm living quite the life" brag, or the "I'm in a great relationship" brag.
#2 Be cryptic. Post something that makes it clear something is happening in your life without giving out any detail. Example: "This could be a biggggggg day!" or "Ughhhhhhh!"
#3 Be literal. An actual update to your mundane day. "Off to the gym," is one example, or "Dumplings!"
See the entire list here