Carth nodded in response to Brian's introduction. It didn't seem useful to greet him again, after all. When asked to talk about himself, Carth was actually rather surprised. In his past training, he had been around people who didn't care, really, to find out about the trainees involved in their 'class' so to speak. Carth couldn't think of a better word for it.
"Well, I've been around almost a year, now. I'm hoping to finish training in the near future. I'm only twenty two, but I feel like being involved in the field is what I want to do with my life. I want to be sure, though, that I'm capable of what is required of me before I'm sent out into the real investigations and missions." Lifting his left shoulder in a shrug he continued, "I played Quidditch at Hogwarts and University, always loved being athletic. Where strength and speed could be considered my better attributes, when I'm in a duel I usually question myself."
Carth couldn't very well explain why he had troubles with dueling other than that, while he knew plenty of spells - defensive as well as offensive - he often didn't want to put his opponent into a position they couldn't recover from. He spent his missions going back and forth between his desire to do what was right, and his strange feeling that those who harm others for the sake of it don't deserve to be shown much mercy. It sounded extremely negative, even in his mind, when he admitted as much. Thus, he found that the hardest thing was trusting himself, even as someone who had been in training for so long.