Situational awareness. Know, not think you know, know where you are on the map. GPS is great, except when it's not. Most can't find my house, only been here 16 years but the road name changed, as did the connecting road. Use GPS and you're lost. If you can read the updated maps, you are good to go.

Know how far you need to go. Seldom is anyone lost because they went too far, it's not going far enough and trying to make the terrain fit the map.

Look back. Leave a sign that can be easily destroyed. Say an arrow made of rocks, or branches, placed just off the trail.

Trust in your map. It's probably not wrong, it's the operator. Know how to use a compass as relates to the map, magnetic deflection. Check the legend.

I learned map and compass as a Scout. Mapped my suburban neighborhood at the insistance of my teacher - Dad. Then we compared it to the survey map. I did pretty well if I do say so. Practice, practice and don't rely on anything with a battery.