Margaret, that's an encouraging story. Thanks.
To add to your comments: I've wondered whether or it's more effective to use PG in the "vague" way suggested (toward all learning in general), or toward a specific learning goal. With that in mind, I've begun putting some of my more important goals printed on index cards. Like your 1 sentence suggestion, I've found it useful to clearly define the specific goal I have for a listening session beforehand.
