What is one of the biggest lessons life experiences has taught you so far?

At the expense of sounding all deep, if you were to name one lesson that life has taught you what is it?

I’ll start - Not everyone has good intentions and some people are truly out for themselves.

Another one - First impressions are everything, other than a job interview for example is bullshit. You need to see different layers and moods to someone to get a real sense of who they are.

Another one - You will never get a full grasp of someone’s character until you interact with them in person. Whatever you see on social media is only skimming the surface for example.