NEWEST BOOK: Your Five Superpowers! Angela Costello is an author and Licensed Marriage and Family Therapist. She has been working with individuals, couples, and families since 1999, and sees her clients in her private practice in Los, Angeles, California. She is the author of five books, all with psychological and self-care themes. Angela utilizes Mindful Meditation in her personal life and in her therapy practice with clients, along with facilitating outdoor mindful hiking and mindful eating groups.