Invisibility because then my agoraphobia wouldn't get in the way of me leaving the house and actually going out weekends.
Time travel... I would right a lotta wrongs and give deserving folks the lottery numbers in order to change their lives.
Put things in my soulmate's head, heart, spirit and soul to make him realize that moving here with me is the only way he should live his life.
The ability to induce 0rgasms with my mind.
(sorry, the little stars were irritating me!)