The Star is the first of three celestial cards near the end of the major arcana; along with Moon and Sun it's one of the cards that represents higher emotional states, influencing a state of mind rather than worldly events.
Star symbolizes serene, relaxed, untroubled calm. In that calmness you realize inner strength, you are stimulated with inspiration, your heart opens to generosity and love, and you receive answers you were seeking. All your worries melt away, and your troubles disappear. You feel as though you can share yourself freely with the world with no reservations.