Sleep Issues

Whenever I come home from college one thing changes dramatically:my sleep patterns. I start sleeping like I've never slept before. I'm not used to afternoon siestas so my sleep's always concentrated in the nocturnal hours. But then once I hit the bed at night...there's no telling when I'll be up. I just seem to sleep on and on and on....like there's no sunrise or morning or a world outside of my bed.
And yet in college one tends to stay up late--because that's when all the fun is.....watching movies late into the night is a favourite pastime back on campus. I am really unpredictable when it comes to sleep. Friends have caught me sleeping while they're still talking to me...in the middle of a movie....at times when everyone should be up and studying for an exam the next day, I invariably doze off.
The best part is when friends wake me up and talk to me- they borrow stuff from me or come looking for something....and when they ask me the next day I remember nothing of the conversation....almost as if my body was operating on auto-pilot after been shaken out of deep slumber.
Six for a man, seven for a woman and eight for a fool: they say that's the number of hours of sleep you need depending on what category you belong to. Well I guess, you can only apply that rule to people who follow a definite routine in the first place....not to dimwits like me who do not have a functional biological clock. I can never go to sleep saying for sure when I'll be up. Any number of alarms are just a waste of energy. I simply turn them off and go back to sleep. The interesting part I never remember switching off the alarm! It's only when I test the alarm later to see if it's working that I realize I must have turned it off.
One of the greatest challenges that faces me today is to work out a consistent sleep pattern. To set my biological clock working. It's a daily fight for me. It's tough and leaves me frustrated and disgusted with myself more often than not. It's been so long that I've tried and failed to work out my sleep issues.....