The version I heard is "If you knew X's problems, you wouldn't trade your problems for theirs." Not universally true, but goes a long way . Another aphorism is

The version I heard is "If you knew X's problems, you wouldn't trade your problems for theirs." Not universally true, but goes a long way . Another aphorism is, "some people are givers, others are takers". It's a function of personality, not resources or circumstances.