Thank you Cain,

here is what i found interesting in that Guardian article.

Increased workloads and 24-hour access to the internet have created a world that rarely sleeps. The statistics are staggering. One 2011 survey by the Mental Health Foundation found that more than 30% of Britons suffer from insomnia or another serious sleep problem.

When you are sleep-deprived, you struggle to think straight. Research by University College London Medical School revealed that people who fail to get a full night's sleep score significantly lower on tests of logic and vocabulary.

If you have suddenly woken up because you have remembered something that you need to do the next day, simply make a note of it and try to go back to sleep. However, if you wake for more than about 20 minutes during the night, most sleep scientists recommend getting out of bed and doing some form of non-stimulating activity. Whatever you decide to do, avoid bright lights and computer screens.

• Richard Wiseman is the author of Night School (Macmillan)

This article helps you understand better why its important to sleep and also the factors restraining us from sleeping. I personally believe, sleep is a very important part of my day, and i try to leave everything behind and just sleep. By I guess it's not always easy to do so, because usually i am always doing something during the day, meet people  or studies perhaps....these things become major factor when i am trying to sleep as they are my obstacles.