I am suffering from sleep disorder. After full day's work I feel sleepy, but when I go to bed, for few disturbances I get awake. I'm an engineering student & staying at Hostel. I awake from sleep for some noises, which r usual in hostels, whereas my friends go to sound sleep inspite of these little chaos. At my early age I had sound sleep every night, without caring any noise. But nowadays I hardly go to deep sleep for 4 hours. As a result my concentration & memory power getting weaken. I feel I'm in serious problem. What should I do for sound sleep at every night? Pls help me.