Lindsey Joiner is a Positive Behavior Specialist with Meridian Public School District in Mississippi (USA). She is a Licensed Professional Counselor, National Certified Counselor, and Board Qualified Supervisor. Many of the activities in this book were developed as part of Lindsey's experience conducting and supervising day treatment programs for children and teens in a community mental health center. She discovered that creative activities helped to engage and motivate the children and teens, improving their enjoyment and attendance in therapeutic sessions.