My boss is like this. Very unpredictable person and I don’t think it is healthy for anyone. Generally speaking I will know this is a massive red flag for future jobs.

My acquaintance works 1-2 hours a day, every day. Is wildly successful, just racked up their 3rd billion and looks sane. n=1

sounds terrible

How is that successful? Sounds like his days involve working like a dog.

He does work like a dog, but hes not even 18 yet and has already made more money than most people I know make in their lifetimes.

That’s actually incredible. I was picturing a 42 year old man. Good for him.

At what point does he enjoy success? Does he take vacations?

He enjoys success by literally enjoying it successeeding. He sees his projects pay out, and move on to next asap.

Maybe he's just one of those lucky people that only need 4-5 hours of sleep every night ¯ \ _ ( ツ ) _ / ¯