I loved what Tobi said in this tweet: https://twitter.com/simonw/status/1210622908143415297
"For creative work, you can't cheat. My believe is that there are 5 creative hours in everyone's day. All I ask of people at Shopify is that 4 of those are channeled into the company."
5 creative hours in a day absolutely matches my experience based on my own career. I can get a HUGE amount done in those 5 hours if I apply them sensibly.