This is probably a dumb question but can you get a 3.0 average to a 3.5?

In like a year? I have a 3.0 but only barely, I'm usually on the line between a 2.8 or 2.9 and I just got it up to a 3.0 at the end of last year. I want to know, because I'm going to be a junior this year and I really want to get into UNC hopefully on a soccer scholarship but since that might not happen, I need to get my GPA up and I was wondering is it possible to do that in a year? I know I'm going to need to work hard if it is possible.