I would not recommend advertising or marketing for a creative type such as you; it would be like recommending someone who loves to write go work with a publishing company and become an editor. You have to stay with your preliminary "interests" and make them work in some way. If you think you want to go back to school, take voice lessons and learn to sing in front of audiences! Do something that will help you in the way you want to be helped? Figure out what you'd really like and then work toward it. I like the book Wish Craft by Barbara Sher and her other books; they helped me envision what I wanted and ideas on how to get there.