This will disappear in the noise but I sincerely hope it gets to you because experience has taught me it's true. Firstly, it sounds like you are prioritizing school/work above yourself. Remember that work and your education are a means to and end. That end is having a fulfilling life and finding happiness. Now, I don't know you so your goals may be different (e.g. you may seek spiritual enlightenment) but for most pe…
Not only that, I think that a person who has an accent and speaks English imperfectly, yet carries himself confidently, is particularly intriguing to many people. They're often more interesting than the normal confident guy, because there's an element of mystery. "This guy is really cool and is probably popular where he came from. I bet he has lots of interesting stories to tell about things I've never experienced."
Also, foreignness is probably the best conversation starter that I can think of. People love asking about where you came from, and if it's true that so-and-so happens there, and what do you like about America? People LOVE teaching the basics about their culture to curious foreigners, it makes them feel like an ambassador.
There's so much you can ask other people ("how does X work here", "Did you grow up doing Y?"). If you can't think of something to talk about, talk about food. There's a million conversations you can have about food to someone from another culture.
In short, don't feel intimidated by being foreign - it can be a huge advantage to you once you get confident!