I don't think my experience will be helpful to you because it has a lot to do with my biology, work flexibility, and lifestyle, which aren't necessarily identical to yours.<p>What I will say that's universal is this: get enough sleep, even if you think you can function without it. Choose a consistent bedtime, and stop using any screens 2 hours before that time. Take those hours to cook, clean, run errands, call family/friends, read, or whatever, but reserve them religiously. Then get as much sleep as your body needs (probably 8+ hours for most people).<p>I can't find it now, but a study recently came out that people operating on 6 hours of sleep per night didn't <i>feel</i> impaired after 2 weeks, but they were just as impaired as people who had been awake for 24 hours straight. That is somewhat consistent with my experience.