You should always write in third person. No matter what. It's the easiest form, plus the most popular, but to show those who do not know, I will give first person, second person, and third person.
First Person - A quite simple form, but not as common as third;
I kept running, my feet hitting the ground with a dulling soreness. No, this wasn't real. None of this was real! I'd wake up any minute, safe in my bed. . . but that alarm never came.
Second Person - You do not see this a lot, but it is a form;
You look into a deep cavern, you eyes luminated by a glowing orb.
See why?
Third Person - The most common form of writing ;
Jason let out a deep sigh. He was starting to come to terms with the fact Ariana had lied to him. About everything, not just one thing. His face formed into anger. This was her fault, all her fault. Maybe he could've blamced Alex, too. . . but, it just didn't seem right.
See? There's some examples. Happy roleplaying~