I need more sleep.

I need more sleep but whenever I sleep I always want to do something because I feel like I'm wasting my time. I took nyquil this past week because I got tired of waking up with only 4 hours of sleep. I need to try fixing my sleeping habits before it permanently stays like that. If i don't get use to getting enough sleep I wont be able to wake up for morning classes next semester. I really need to fix it right now. Especially for finals week so i don't get sleepy while taking my final this week and next week. Don't get me wrong though I love my sleep.