i functioned in a high level corporate job for 3yrs before meth brough me down. and then it wasn't so much much being spun up at work as it was missing as much work as i was missing during the day.
to a certaing degree, my ability to work 24x7 was considered a valuable asset.
i also had the benefit of being a relatively high level manager, and could set my own schedule mostly as i pleased.
even though i lost scary amounts of weight no one cared. there's tons of drugs being done in high level corporate america anyway.
ultimately, though, i lost the ability to think, to remember, to exercise common sense, to manage my people in a way that inspired trust.
the way to manage on meth in society is to take what i call the "pissed off rich white guy approach". you drive a suitably nice car, wear suitably nice clothes, and act like any cop who pulls you over is this close to getting sued just because i'm a privileged asshole seems to really work. so many times i had paraphernalia and quantities on me and no one dared do anything other than let me on my way.
eventually, after enough meth experience, your eyes no longer dilate, and you learn to regulate your body to appear normal.
its not a fun life, don't get me wrong. its running on borrowed time, unless you got a hustle going.
for me, it ended by being RIF'ed. Which was long overdue for me, but i was senior enough that it was the polite thing to do. they paid me a big ass check to walked and never look back, and i did.
now, had i been straight the whole time.... holy cow, my career would be en fuego. wish i never met meth. haven't touched it in years now. never intend to again.