Replying to GPA too low for upper division courses

My first two years of college, I screwed around and pull a whopping 1.95 GPA. Took two years off and then went to a community college to raise my GPA. The classes I took at CC were all pre-business courses that I needed for my major. I actually gave a damn and got nothing lower than an A-. However, my cumulative GPA is still only around 2.6. In order to take upper division classes at the University I just transferred into, I need an overall GPA of 3.2. So now what? Is my only option to take a bunch of random classes to boost my GPA? At CC, I was killing two birds with one stone by raising my GPA as well as taking pre business courses that I needed to take anyways. But now I've taken all of the lower division classes that are required for my major. Just wondering if anyone has been in a similar situation.

And yes, I know I'm an idiot for screwing off my first two years at school. Can't stress that enough