Never be jealous or envious, and here is why.
People gloat when they are happy.
People often portray themselves as happier than they are, and they may even do it as reassurance to themselves.
Just know people show you when they're happy, they don't show you when they're depressed or crying.
Everyone breaks down at some point.
Would you ever know it? Most likely not.
Don't ever wish to be in anyone's shoes but your own, because you were never meant or built to handle/be exactly what they are.
Everyone is human, and any way you've possibly ever felt.. someone else out there in the world felt that way at some point too.
All emotion is temporary, know this.