i'm not gonna sugar coat it at all but salesman or people who travel are going to have a tough time eating nutritious food. you need to do the best you can, read ingredients on what you buy. when you stay at a motel/hotel get a place with a stove/fridge so you can cook your own stuff. or how about taking a crockpot or air fryer with you when you travel if possible? that shouldn't be hard if you are travelling by car