It's good to know you are working hard. Everyone should, trying to make most of your talents. And I personally you are best talent out here and it will be a tragedy if you don't put that to use. At same time "sleep" is also important,essential,every natural thing is important, holidays are also important part of life, enjoyment at times though is also important. Regular exercise is also important in life. Finding time for family, is also very important. People asking you to have proper sleep are not jealous of you, they simply care about you. Remain healthy and keep working hard.