Sleeping problem at night

I always liked day time sleeping. But due to job it became impossible. Now taking rest according to doctor’s suggestion. Most of the times I had to stay in bed at day time coz of sickness. That’s makes I fall in sleep at day sometimes…. Which might causes no sleep at night. Then it’s difficult is pass time at night. Sometimes I read book, sometimes watch TV, sometimes check mails and write blog. Cozes at day were not feeling good to sit in front of computer.