To bring impatiens inside for winter, start by cutting back the plants to about 4-6 inches tall. Dig up the entire plant, including the root ball, and gently shake off excess soil. Place the plant in a pot with fresh potting soil, water it thoroughly, and find a bright location indoors with temperatures between 60-70°F (15-21°C). Keep the impatiens away from drafts and provide regular watering to ensure it survives the winter months.