Focusing on lessons I still have not been able to learn

In my later years I seem to be focusing on lessons I still have not been able to learn well, such as "horses to water" and "casting your pearls": "You can lead a horse to water but you can't make him drink" (unless they understand the difficult journey ahead, they are not interested in taking action to prepare for it); and "Cast not your pearls before swine, lest they trample them beneath their feet and turn to rend you" (Swine do not recognize pearls as valuable, they look like mere pebbles; and they were looking for you to cast grains of corn for them, how dare you give them pebbles instead! Teach you a lesson, take that!)