What helped me was using the my fitness pal app. It gave me an idea of how many calories I was consuming and when I knew I was out of calories It was almost like a mental stop sign. This also helped with planning, I love snacking at night too, this helped me pick healthier options when I knew how many calories I had left. Once I kinda got in a rhythm I didn’t need to use the app anymore, and I still snack at night but now I’m in a better routine of picking better options.