An easy first step when it comes to food is to become more aware of what you eat. You can keep a journal, use an app, or, just take a picture.
I found that the simple act of taking a picture of my food has encouraged me to make better choices without any sense of obligation to do so. There are lots of habits you could experiment with around food but if you’re looking for a really easy place to start, try a photo.
Suggested habit: “Take a picture of or record at least one meal”
The idea is that, if you forget to take the picture, you can still write down what you ate at the end of the day without breaking the streak.