'...And what do we tell the god of death?' Not today!
That's the proper attitude. Why starting something that You can't finish in reasonable time? If it's 30 mins before estimated end of day and you pick something bigger you either have to go the extra mile, choose something smaller or call it a day, right away.
Don't make your well deserved free time at home sour by unfinished work nagging your sanity.
Problems have normally the custom of not running away. Either they wait for you or if not: so be it.
Enjoy your happy end of day...