I love this. This is the best I've heard from you. Keep the chorus the way it is. The "SOL" is the weakest thing I've heard in this song. But it may be more awkward trying to substitute another line that says the same thing. The only thing that I think may improve this is a bridge that takes this song over the top with an emotional pay off. Make a brief emotionally strong statement raising your pitch and power to give your audience the lift they currently don't get and you have yourself a hit!IMHO
Good writing and performance. Best wishes Heather.