I had records of having no sleep for 30 hours straight due to heavy workload. After 8 hours of sleeping, I had to work again for another 12 hours...I have had this kind of life for three years...I was enthusiastic at that time though...
When I think of those days today, I still think they were fortune to me. Without those days, it would be impossible for me to live the current happy life...
Be positive...
Nowadays, so many people(including so many native speakers) have lost their jobs. They will admire your having a job.
Wish you are happy...
