I've been saying for half a decade or longer:
"Going slower today means we can go faster tomorrow".
It took a long time for some of my team members to process this, but I believe they've all taken it to heart by now. The aggressive, rapid nature of a startup can make it very difficult to slow down enough to consider more boring, pedantic paths. Thinking carefully about this stuff can really suck today, but when its 3am on Saturday and production is down, it will all begin to make a lot of sense.
Having empathy for your future self/team is a superpower.