the time i wake up

everytime Everyday I set an alarm before I go to sleep. The next morning, I awake up around 1 hour before the time I set.....
Yesterday, the setting I set the time for 5:30am, but I was awake before 4:30am.
This means, I can't get enough sleep sleep enough if i set an alarm.
Therefore, I ordinarily don't use alarms to get up, but when I have a special event or plan and I have to get up early, I can't fell in asleep confortable fall asleep comfortably without an alarm. However, I also can't sleep enough with an alarm! What should i do? are Is there anybody who has the same problem with as me? Ordinarily 

This sounds like a difficult problem to fix! I suggest staying in bed even if you wake up too early just to give your body enough rest. You may not sleep in that hour, but at least you will be relaxed.

The Time  I Wake Up

Everytime I set an alarm before sleep, next morning, I awake around 1 hour before the time I set. 
Yesterday, the setting time was 5:30, but I was awake before 4:30.
I mean, I can't sleep enough if I set an alarm.
So, I ordinarily don't use alarms to get up, but when I have a special event or plan and have to get up early, I can't fall  asleep comfortably without an alarm. But I can't sleep enough with an alarm! What should I do? Is there anybody who has the same problem as me?