For about three years, we had a bedtime routine that worked very well and a kid that slept clear through the night in her own room.
For the past two years, bedtime has been a struggle. We made various adjustments, but they were never more than short-term bandages. Nighttime almost always turned into a battle of wills.
So, we gave up. No more bedtime. We go to bed when we're tired, or when the kid asks us to read to her. She usually wants to sleep in our room, which we only let her do if she's being quiet and trying to sleep, otherwise it's off to her own room. Being loud and wild in our room late into the night had been our breaking point.
The results aren't ideal, but the struggles are much reduced and she's sleeping in her room more often, because it's where she can stay awake if she wants.
What are some standard parenting practices that you've just abandoned entirely?