The only truth we really know is that we're going to spend the rest of our lives in our own houseboat (our head) so it makes sense to make that houseboat as good as possible. The houseboat needs cleaning and maintenance, and it shouldn't be weighed down by junk (our own thoughts and other people's opinions). There's a bunch of bosses with different ideas about where you should be heading in the ocean of life, and a zoo of animalistic desires below the deck who are really steering. But it's your houseboat, so it's probably time for you to cast away and set sail (is that even how houseboats work?) on a journey to understanding it.