Anxious of acceptance

So, I (History Major at CC) recently applied to five UC schools (UCLA, CAL, URC, UCSB, UCS) and I am really scared of any of my top schools not accepting me. I’m an average student — I have an okay GPA (3.0 to be exact), but I’m also really worried about my PIQ’s. I’ve been in contact with some students who also intend on transferring and their GPA’s have made me feel really insecure about my chances. I do happen to be very involved with school, but I feel like that doesn’t matter if my GPA is okay. To be fair, history isn’t all that competitive but as someone who wants to go into the legal profession — it’s looking okay. I am really passionate about what I am learning, academically and career wise though. I genuinely love it, so far that I am accidentally graduating with three AA’s. Maybe I should be more confident in myself. Has anyone transferred to any of the big UC schools with an average GPA?