Would I be an avid journalist?

I've had a bit of an interest in journalism for a while but I've had my confidence completely plummet lately. I started this new history class this year which everyone finds to be difficult and harshly graded, but I seem to be doing worse off than people that don't even seem to be nearly as intelligent. I don't understand exactly what I'm not getting. Anywho, I had been receiving C's on essays in this class despite getting much higher marks in previous history classes and doing much better in my English class.

I am in the gifted program at my school and have been for a long time, but left the school for 4 years from 4-8 grade, when I went to a really low-grade trashy school. This past essay I was in the 60 range for percentage. It took me a bit to get an idea of what I wanted to do in the essay so I finished really, really close to the deadline. It's really killing my spirit that I can't get a high grade in this class. Ever.

I'm receiving 98's and 99's in my creative writing course and I am an active novelist yet I cannot do a single essay right for my history class despite the teacher's (a real dictator) "help."

Knowing all those other things but not being able to do anything right in that class, should I even consider being a journalism major?