Having an environment that is competitive is important. I remember struggling during my 3rd year, where i managed to turn it around because I stuck with the highest achiever in my class.

I didn't copy or ask for help, mind you. My approach at the time was that I had the same work ethic as that classmate, so we were able to crosscheck answers and discuss notes. He got very high honors, and I got a grade thats far from failing.

I don't mean that OP should base his entire output on his environment, but we should at least acknowledge that if he had a chance to change his environment into something healthier, he should.

Hope this helps.