You have to work it, for it to work
Very basic whole foods work best. Our bodies respond very well to it.
I bet we all live pretty busy lives so we plan very carefully what the day will be like. I use a small icebox and stuff it with legal foods for days where I am on the road a lot. I do boiled eggs or salads or left over meats. I have cut up veggies, some cheese. If I know I can get to a microwave during the day I take food that can be heated. I like some of Linda's recipes for that (The whitecastle pie - is great - it freezes well and can be reheated easily).
Don't use busy as an excuse. Work around it. Ask away. I am sure people will have plenty of ideas for things that can be done.