I started writing a simple to do list every day and it helped more than I expected

I used to think writing a to do list every day was unnecessary, but I kept seeing people talk about it so I gave it a try. Nothing fancy, just a few things I wanted to get done that day written on my phone. What surprised me was how much less mental clutter I felt. Instead of trying to remember everything, I could just look at the list and focus on one thing at a time. Also weirdly satisfying to check things off, even small stuff. I am not super consistent with it yet, but on the days I use it, I feel way more organized. Do you guys use to do lists or just keep everything in your head?