Hi intellegent. Best advice is to go to bed earlier. Even if you are in the middle of something important, it is better to get the extra sleep, and have a better day the whole next day. Sacrifice one hour for an extra 16 good hours tomorrow.
Ben Franklin was right, that early to bed and early to rise makes one healthy wealthy and wise. Even if it is the same amount of hours, but when you go to bed early, you sleep better because you are not as afraid of oversleeping and missing something important, and then naturally you will get up earlier, and be on time and not so rushed, and more refreshed.
I also need this mussar, but I know from experience that late nights are very bad for general productivity.