To make your Christmas cactus bloom, it's important to provide the right conditions for it to thrive. First, make sure it's getting enough sunlight, but not too much direct sunlight as it can scorch the leaves. Secondly, ensure the soil is well-draining and provide regular watering during the spring and summer months. Lastly, provide some humidity to the air by placing the plant near a humidifier or misting the leaves with water. With proper care, your Christmas cactus should bloom beautifully in time for the holiday season!