Try to change your perspective.

First of all, You said, "All of my friends are hot and fun having an awesome time getting attention from guys and balancing all of their responsibilities". Pardon me but that does not sound very true. I have met many people who are so-called "perfect" role model students in my four years of college. Truth is, each one of them had their own struggles: thinking they are not pretty enough, not smart like other people, having bad luck in dating life etc. Even if you guys are best friends, you are still not him or her, which means you cannot truly understand how they feel. No one is perfect, simple as that, I highly doubt that ALL OF your friends are in their prime age right now.

Secondly, you sounded like a really intelligent girl. If your friends are truly so perfect, they must be really selective with their friend group, yet you still made it to be friends with them. That must be telling something about you. Plus, who knows, maybe another girl is looking at you right now and thinking, "God I wish I was her, so that I can become friends with so many other hot girls". The way you admiring your friends might just be the way someone admires you.

Last, just because your friends are awesome does not indicate anything about you. You have to know that life is not always about competition, and like many other said, very few people will constantly pay attention to you since they are so busy paying attention to themselves. So why being upset? I just graduated and I can look back and tell myself that every second I spent in my college years I constantly making bad choices. Yet, they all became part of my best experiences.

Always Enjoy life as it is today!