To dream of using a life saver represents an opportunity or last chance to spare yourself from being overwhelmed by difficult situations or uncertainty. You or someone else may have been saved from a jam or embarrassing loss.
Positively, may reflect feelings of being lucky to have another chance or an opportunity to walk away from a problem. Taking advantage of an opportunity before it slips away. Feeling that someone was looking out for you.
To dream of an unused may reflect a backup plan or safety measure. Hoping that you won’t have to do something unless you absolutely have to.