Dance like no one is watching refers to the fact that we shouldn't worry about what others think of us, we should just live our life and live it well.
I love this quote. It's simple but it says a lot. I found it particularly relevant a couple of years ago when I was approaching an age with a number I have no intention of mentioning again! Anyway, I decided I needed to do the things I wanted to do. I needed to push myself, if I didn't try, the dreams would never come true. So now I try and I keep trying. I started and finished my first book. I try to enjoy myself without putting things off for another day. OK, I may occasionally put the more difficult things off for another day. But the point is, I'm not putting them off permanently. I'm trying to live in the moment and it's going quite well. I don't want to get to an age where I look back and wish I done various things I had the chance to do, but didn't.
I tend not to dance in front of others as I have the rhythm of a dancing frog, but I do like the quote.
What are you doing that has you dancing like no one is watching?