I find food difficult, because I am sensitive to so much food, so there are only certain things I can eat. And also, once I find a food I like and which agrees with me, I tend to eat it all the time, and thus my diet lacks the variety it needs. And at times when I am very overwhelmed, I can resort to eating easy, comforting foods like sour candy and Doritos all day, which is obviously not healthy.
One thing I've found helpful is to make smoothies where I put all kinds of things in it that I know are good for me - fruit, nuts, oats, seeds, yogurt, cacao nibs, etc. I make one big batch of smoothie and I pour it into several cups, put them in the fridge, and drink one every morning for breakfast. So I know that this way, although I am having the same thing every day, it is giving me a variety of nutrients that are good for me. And it is conveniently filling, so I don't feel hungry for a while afterwards.