I was in the same boat until I had a baby who was a _terrible_ sleeper during the night. Once I was down to 4-5 hours sleep a night, napping during the day was heaven!

Sometimes I'd have had too much coffee or been overstimulated through work or something, I found [these tips from the military](https://www.inc.com/jessica-stillman/the-trick-soldiers-use-...) really helpful. Even now, I pretty much only need to relax my jaw and do a few rounds of 4-7-8 breathing and I can have a nap on demand!