Get used to the controllers! I actually can't stick with one genre or a game for too long otherwise it gets me hating it. I prefer to shuffle between different types of games. So with a violent game that is about stealth (Metal Gear Solid) comes a game about getting as much scores as I can with microgames in a cartoonish environment. (Warioware) It's what I love about video games. :P
Halo is so easy to pick up and play though haha. My cousin was like you though, he was awful at it and he didn't enjoy it but now he's kicking my ass. (Mostly due to me moving on from the series. Dude is still obsessed.)
Back to Persona. Slowly I'm actually starting to dislike Naoto. I just realized that the only reason I even liked her was because of the fact she's a detective (and me being a sucker for detective stuff had to like her for that), but it doesn't really hide her bland character design and personality. It's kind of the same for Kanji too, except I like his design, and I liked him way better when he was tough (before you rescued him) and not the "looks like a grizzly bear, but actually a teddy bear" character archetype. I actually prefer P3 cast now.