<human>: Can you give me the gist of the text in a nutshell?

I spent the last hour or so looking around on this sub; I've read the FAQ/beginner guides/couch25k and so on but I'm still not feeling too convinced. 

A bit about me: I'm a high school student with a pretty heavy course load ("college level" classes), so I tend to not sleep enough and I'm tired all the time (and now very unfit). At my best, I was able to run a 9 minute mile a year ago - no way I could do it at present - but I've never been able to enjoy running, ever. 

I'd like to learn so I can be fitter and hopefully happier. One of my goals is just feeling capable and powerful enough to run longer distances without too much effort. Another pro - it might help me deal with sadness/stress in my life. 

So why don't I just get out there and do it? I do have a couple places I can walk or jog, but I don't know how to reconcile feeling tired all the time and even more tired after running. I feel good for maybe all of the first 30 seconds and then it just gets worse after that - nausea, achey-ness, allergies, etc. Even at a slow pace at a moderate distance.

Anyway, my questions - is pain and discomfort all it's ever gonna be, even if I work at it long enough to become fit? I've even heard that the gift of enjoying running/getting "runner's high" or not even being aware your legs are moving is something reserved for the lucky few. I guess this is what I"m most hoping I can achieve. Is it possible for everyone? How experienced would you have to be? 

Sorry, this post was confusing and whiny. My lame excuse is that I'm sick right now.
<bot>: Want to be able to enjoy running, but don't know if it's possible for me. Would love to hear advice or insight from you runners and once-beginners.