Creating a good sleep environment is crucial for your toddler's sleep training. Start by ensuring a comfortable and safe sleeping space, free from distractions. Keep the room dark, cool, and quiet, and use white noise or a lullaby to soothe your child. Establish a consistent bedtime routine that includes calming activities such as reading or a bath. Avoid using electronic devices before bedtime and limit sugar and caffeine intake. With patience and consistency, you can create a conducive environment that promotes healthy and restful sleep for your little one.