My Question Is Regarding Sleeping Deprivation. I Am Working In

my question is regarding sleeping deprivation. i am working in a US mnc for a long time but recently started working in shifts and therefore has problem in sleeping on different times. As a result I feel tired, drowsy, frustated all the time. please suggest what should i do or take. Please suggest something with which i can sleep at least 6-7 hrs good deep sleep, so that when i wake up I should feel fresh and lively.