What are some productivity habits that you've been surprised to find out work really well for you?

About a month ago I started doing the 3-5 tasks on a 3x5 notecard trick as a way to actually get a lot more done with my day and I've been pleasantly surprised to see that it's helped me get way more done per week rather than just maintaining a massive todo list in Roam Research. I was writing about some of my other smaller productivity improvements https://danielfarrell.substack.com/p/my-guide-to-personal-productivity but I'm curious to hear what tricks have worked for other people.