Something "large" like an eating disorder, I would break down and tell some of? A single day, perhaps, an "idea" of what it is like?

When you think of an entire day, and the Sun, for example, you can describe the purple in the sky just before the sun rises, how you enjoy the coolness and the anticipation of the day and not mention the heat of the Noon sun and how you stared at it until it hurt your eyes?