I agree with those two. One diet that I have found to be healthy and get your energy level higher, is the fruit diet!
You eat mainly fruit/veggies and some meat and whole grains along with it.

Example, fruit for breakfast, veggies and toast or meat for lunch, and a mix of all three (fruits/veggies, whole grain, and meat) for supper.
Good luck!

Steph and Jes