No mood

Don`t know why recently no matter what I do i feel like dying only totally no mood in doing my work . I can`t even enjoy my day , or even have a good night sleep at night usually sleep around 3 to 4 am and woke up automatically around 7 - 8 am in the morning . I don`t know what`s wrong with me lately . . Just feel like there`s no meaning to live in this world already .