@Lex345
"Living my best life" confuses me
Well of course you are, everyone is 
I've only seen in used in a sarcastic manner, so having to do something you really don't want to do.
I've used "It is what it is" when it is something out of my control, maybe around relatives babysitting so one can go out, I have no one that can, so I can't go out, I can't change that "it is what it is."
But "you sound like hard work" is awful and just used really offensively on here, if anyone is upset about anything they are immediately hard work.