"When my daughter, Sophia, was only a few weeks old, we capitalized on such multisensory perceptions to help her develop sleep patterns that would not reduce us to sleep-deprived zombies. We exposed her to distinct songs, stories, colored blankets, and other rituals to help her distinguish statistically between naptime and bedtime, so she would sleep for longer or shorter stretches."

Sleep techniques

Source: Lisa Feldman Barrett, How Emotions Are Made

Toby Shorin