What kind of food components contain more energy?

So what should I build my dishes out from to have an energized, successful day?

By energy I mean like starch which is in bread, potatoes, sugar and stuff. Energy that allows you to move. I'm not asking how to be stronger or anything.

My understanding of food (extremely simplified):

• bread, potato, sugar -> energy


• meat -> protein (build muscle)


• ...

The question I want to answer for myself: If I eat meat, can I be sure to ingest enough energy to live through the day?

(I'm not anything like professional in food stuff.)