Hi I just want to throw in here that if you're prone to looking at your phone or watching a computer screen in some capacity in the hours before your sleep, there are two programs that I use that can help massively. The first is Flux for Windows and the second is Twilight on Android. Both will lower the levels of blue light coming off the screen after the sun goes down. It really helps me from getting headaches with college work late night and they have definitely both improved me sleep earlier. Also can't say enough good about the above mentioned breathing.