A recent Reddit thread compiled the perfect list of songs that say, in one way or another, that everything will be OK. This playlist will make you smile and remind you that whatever is going on, it too shall pass.
For what it's worth: It's never too late to be whoever you want to be. I hope you live a life you're proud of, and if you find that you're not, I hope you have the strength to start over. -F. Scott Fitzgerald More