Need more sleep

I'm not getting enough sleep these days, and whether I may be able to handle it now or later, my brain is trying really2 hard to make up for it.. And the result things that may affect me is a vicious cycle like possible injuries/mistakes due to though hiccups can hurt you, and the lack of sleep can cause greater stress.. thusly making it harder for me to get restorative sleep. Lack of sleep has also been linked with depression which either results in even lesser sleep or too much. The science of sleep is complicated, but the solution might be simpler than I thin.. I have to change in my lifestyle, getting rid of distractions in the bedroom(maybe), exercise(need more), and etc.