What is "treasure in heaven"?, page-15

and what is this "one thing"?
dependently-originated happiness

someone was asking what someone else ate for dinner
the other briefly explained, "vegetables..."
the reply came back,
"don't you get bored with that?"

since when should what you eat become a source of happiness?
since when should vegetables become a focus for suffering?

(something like this could be a good mantra)