In the movie, Elsa has ice/snow powers that she has kept a secret and when she gets angry they become hard to control and just as she is crowned queen, she loses control and shows everyone her powers. Ashamed of her self, she basically runs away to the mountains thinking she can just disappear and use her powers freely without hurting anybody. When she comes to this conclusion, she sings this song. So now that you understand the context, let's jump into the lyrics!
So you can find the lyrics here. In this first verse, she is talking about how she feels totally isolated and the way she feels about it at first isn't so good. And there is a "storm" so to speak inside of her regarding her powers because they are a part of who she is that she has tried to keep hidden for a really long time. But it got to the point where she just couldn't anymore. Then she talks about how she had to keep it in for so long and her parents had always told her this line "conceal, don't feel". And just as far as like emotions go, this is NEVER a good idea. And it wasn't a good idea for Elsa either. Covering up how you feel makes it harder and harder to keep them concealed and eventually they will all burst out just like her powers did. And then everyone knew. So then she has this realization that she can finally let it all go. She realizes that she can leave behind this whole idea of concealing her true self and start a new life. She's "slamming the door" on who she used to have to be.
And she stops caring about what people think or tell her about herself and her powers. She never had a problem with it to begin with! So now that she has put some distance between her new life and her old life she is able to see clearly that she was ruled by fear in the past and she wouldn't allow herself to be ruled by it anymore. And now she is just going to explore herself and her own power and she won't be limited by rules made by others. She is going to make her own rules for her life. In this second chorus she says she is "one with the wind and sky". I think that this not only refers to her powers of ice and snow but also to her finally feeling like she is who she is supposed to be. She feels like she is natural now and not forced to be someone she is not. And she is stronger now because of this, hence "you'll never see me cry".
And then it goes to this scene where she is really using her powers and she is really letting herself go and her power and soul and thoughts all come out at once in this beautiful way and it really shows how she finally becomes her true self and she says "the past is in the past". This has always been a very powerful statement. And it's also very true. The past is in the past and there is nothing you can do to change it. All you can do is learn from it and move on from it. Then this last chorus is really really powerful. She says that she will "rise like the break of dawn". This really shows how she has discovered her own internal power as an individual and she realizes that she isn't perfect like everyone wants her to be. Nobody is perfect but feeling like you have to live up to some perfect expectation is really really hard and takes an enormous toll on you but now she is free of all of that. And before it was like a darkness in her life and now that she is out of that environment she is in the "light of day". And she finally understands and accepts herself for who she is despite what other people think or say or who other people want her to be.
Love to all,
Autumn the Music Girl