what has 2017 taught you?

Today is December 30th, the 364th day of the year. We are just a day away from the end of one year and the beginning of another.
For many of us, we have experienced happiness, grief, sadness, so many emotions through the various things that have happened to us throughout the year.
So let's look back on the year that was and thinking about the lessons 2017 has taught us.
WHAT HAS 2017 TAUGHT YOU?