Well, my life is pretty quiet as I live alone in countryside and am retired so I live unusually, I think, compared to most people.
But my routines have definitely become steadying factors. I eat twice a day except for a tiny snack in the evening. So I eat at set times. That seems to suit me best. I don't do lunch, I just have very late breakfast and dinner later.
When I get up, the morning routines help me (unless things get VERY bad) I get my warm drink, go outside, walk around gently, look at the garden. It gives me something nice to focus on rather than getting ominous feelings about what my gut might or might not do in the next half hour.
I think I like to pretend I am just living a normal life like I used to, when I get up.
Some ever hopeful part of me keeps imagining a re-set button that sleep might have clicked on, like magic. For an irrational reason I can never quite shake the idea that one day I will wake up and it will have all gone away!
(Yeah....right....but subconsciously I keep doing that.)
Sometimes it works! My gut is fine.
Sometimes uh-oh, being 'ordinary' didn't work, and after the bathroom call I get the shakes and feel weird, but carry on with the next little morning routines anyway (put a bit of lipstick on in case I meet anyone, tidy my hair, listen to the radio while doing that, wash the dishes and tidy things away, give the wild birds some food, check how many new seedlings of something I planted have come up.)
Even if I don't feel well, just continuing to do those little daily ordinary things helps me to have something to hang onto somehow. Many times, things don't get worse, and I will steady out in a couple of hours.