Oh yeah, there are many different types of guitar necks out there. Some people like the feel of a beefy neck like Stevie Ray Vaughan's signature Strat, others like the feel of a super-thin Ibanez neck, and still others like the thick roundness of a '50's-style Les Paul. Just make sure you wind up with the one that's the most comfortable to you. My very first guitar was a no-name student-sized acoustic with a really narrow neck and ridiculously high action, but I was determined to learn no matter how much it hurt. When I went from that to a Les Paul knock-off with a nice slim-taper style neck about a year later, it was like a breath of fresh air.
As far as getting your chords down pat, here's one kind of inspiring way to look at it. I read once in a book about Zen that "It's humbling to know that even the masters were once students". So whoever your hero is, whether it's Scotty Moore, Charlie Christian, Kirk Hammett, Slash, Steve Vai, Brad Paisley, Jimi Hendrix, B.B. King, Eddie Van Halen, or whoever...guess what? They were all in the same boat as you at one point! I know it seems funny to think, but there was a point in time when even those guys were sitting in their bedroom struggling with playing chords and probably thinking "I'm never gonna learn to play this $^%*&% thing!" :)