Saying things to yourself honestly is the KEY to a successful diary.
a record (like the minutes of a meeting or a log-file), but also a record like Guiness' Book. To break a record, like your Moms did at the Special Olympics, is 記録を破る （きろくをやぶる）.
a memorial, an anniversary of something good , like marriage or a band's anniversary gig. Or something you give your friend to remember you by.