As an astrologer once said, "The purpose of astrology is to remind you of who you are."
A reading is a long look at you and your life using astrological language, a rare opportunity to focus on yourself at length. Getting a reading might sound narcissistic, but it's really about self-knowledge. Being more known to yourself will give you more options in life. You can be happier, more grounded, less vulnerable to conventional pressures. A reading should be an affirmation of who you really are.
For some still mysterious reason, the map of the sky when you were born has information about you - the same way a road map has information about the terrain. In a reading, you won't hear anything you don't already know (usually), but latent talents can be highlighted and new possibilities explored. A reading could be the beginning of a journey out of depression (or it could be the last stop before seeing a therapist). Astrology can be helpful with timing - time to go back to school, change jobs, move? A reading can help you find language for what you're experiencing.
All the way back to ancient Mesopotamia, astrology has been used to predict the future. I do make predictions, but it's an iffy business. It's been said that at its finest, astrology is 80 percent correct. Like many people, I'm psychic on occasion, but it's not a reliable talent. So I can't make promises. Really, the most important thing is to know and respect yourself. From that place you can meet the future.
Socrates said the unexamined life is not worth living. When someone asked Jung why we need to seek consciousness, he said because life goes less well without it. Meister Eckhart said, "Learn to know thyself, it shall profit thee more than any craft." Dolly Parton said, "Find out who you are and then do it on purpose."