My brother the architect once quoted some design guy at me:
If you get stuck, grab a fatter marker.
I like that idea. The bigger marker makes it impossible to draw small details, thereby making you focus on the larger design as a whole.
If you’ve been in a meeting where a programmer says “whatever, we’ll figure it out”, they’re not being dismissive, they’re just doing the nerd version of getting a fatter pen.
Of course at some point you’ll need to figure out those details, but attempting it too soon means you can lose sight of the goal. Stepping back can also eliminate some of those gnarly details if doing so makes you realize they’re really not needed.
(PS - if you know who that quote is from, I’d love to get it right and give credit.)