So, it's simple, but basically, to be mindful of others. Think about what you're gonna say or do before you do it. Think about how that's going to affect the person beside you. It doesn't take much to just respect the person/people around you.
This doesn't mean that you should constantly censor yourself or hide who you are. Fly your flag, baby! But, if you're standing next to a group of kids, for example, keep in mind that child is soaking up and absorbing all of the information or actions you're displaying or vocalizing. Every bit of it.
Make the world better. Don't put people in unwanted situations. You don't know what one person has gone through up to that point in their lives. Love and be kind. Just think about what you say and do before you do it. Words and actions can't be taken back when you've crossed certain lines. <3
PS. Another of my favorites is: "A lie can travel half way around the world before the truth can even put it's shoes on."