Here is an excerpt from this Zapier article. I find it curious that I never took the time to think about the differences between these words.

Habits vs. Routines vs. Rituals: Wondering what the difference is between habits, routines, and rituals? Habits are things that we do automatically – things like checking your email first thing in the morning or putting your keys in a specific spot when you get home. Routines are usually a collection of habits or actions you do on a regular basis to bring order to your day–checking your email, then writing your day’s to-do list, then checking your team’s project management tool as a way of getting the day started. Rituals are like routines. The main difference is the attitude behind the actions: taking a walk everyday at lunch could be considered a routine if you think of it as something you need to do for your productivity. Or it could be a ritual if you think of it as a way to break out of the mundane and enjoy nature. While we’re focusing on habits and routines here, most routines could be turned into rituals with a change of perspective.