In my personal and subjective experience, working beyond 55 hours in a week is very doable... But it's absolutely not sustainable. I've found that doing it for

In my personal and subjective experience, working beyond 55 hours in a week is very doable... But it's absolutely not sustainable. I've found that doing it for more than 2-3 weeks in a row will generally result in declining productivity and burnout after that, requiring 2-3 weeks of 0-30 hour work weeks afterwards to recover. Some hard learned lessons that I now adhere to: * Don't push past 50 hours a week regularly * If you do, cut your hours down to below 40 the following week, or even take some days off * Take at least one full weekend off at least once per month