I don't think this song is about addiction/alcoholism at all. I believe it's about overcoming a great betrayal. Florence is the Samson in the song. Trying to heal herself after her great love "Delilah" cut her hair and stole her strength. If unfamiliar with the story, check out the biblical narrative on this page: https://en.m.wikipedia.org/wiki/Samson
I don't think this song is about addiction/alcoholism at all. I believe it's about overcoming a great betrayal. Florence is the Samson in the song. Trying to heal herself after her great love "Delilah" cut her hair and stole her strength. If unfamiliar with the story, check out the biblical narrative on this page: https://en.m.wikipedia.org/wiki/Samson