Happiness is the death of the ego. If you want to remain a separate entity from existence as almost everybody is trying to do, you will be afraid of being blissful, cheerful. You will feel guilty in being blissful. You will feel suicidal because you are committing suicide on the psychological level, on the level of the ego.
I realized that carbs are often talked about in a negative context, like, "Carbs make me fat or bloated. " But I think for me, I have to have some sort of carb, whether it's rice or pasta or bread or whatever it is, and not big amounts, but I do need carbs because it makes my brain click on.