“You are not trivial.”
“You should treat the trivial things in life seriously and the serious things in life with a sincere and studied triviality”
“you seem to be displaying signs of triviality.”
“Treat all disasters as if they were trivialities but never treat a triviality as if it were a disaster.”
“Whenever you don't know someone and you overhear their problems they always sound so trivial.”
“Nothing is trivial.”