【勝手に引用】
It seems to me that you're not allowed to be miserable once you're past certain age. Your job then is to grin and bear it, and to pretend that everything's fine even when it stinks, and to say that it could all be worse--especially when it could be a whole lot better, and to say that there are millions of people worse off than you even when most of them aren't. (p.242

)