Psychotherapy is a special time when you can play, talk, draw, or do activities with someone whose job is to help you with big feelings. You can tell them things that make you happy, sad, worried, or angry. They will listen to you and help you learn ways to feel better and handle those feelings.”
For very young children, it can also help to avoid words like treatment or therapy and describe it as “a special time to play and talk with someone who helps children.” This makes the idea less intimidating and easier for the child to understand.