Absolutely. I've changed in a million little ways and lots of big ways too. I have no doubt that most of these changes are for the good, but it has not been a painless process.
Unlike Kat, I find living here has made me more healthy. I exercise and eat *much* better here without Taco Bell to sabotage my efforts.

I walk everywhere I go since we don't have a car, and I just find that fruits and veggies are more accessible, better quality, and cheaper than back home. But that's not to say I couldn't have gone the other way....the first year I lived here was full of pasta and pies!
I too struggled with confidence for a long time when I first moved here. I couldn't use the oven, cross the street, and even walking around was difficult becuase I kept triping on the sidewalks for some reason. But I've overcome a lot of that now....slowly but surely.
The hard part, I've found, is reconciling who I used to be with who I am now with family and friends back home. I knew I was changing...my way of thinking about life was different, I was having a million new experiences that I needed to talk about...but I wasn't sure how to say it all so they would understand. So I started journaling online, trying to put into words what I was going through. It helped me so much to be able to a) get those thoughts and feeling out there and b) to be able to look back and see how far I've come.
Anyway, to answer your question - Yes, I do feel like a different person now. Absolutely. The combination of living here, and being married and "grown-up" for the first time in my life was bound to change me pretty significantly. I didn't realise how much it would change me though, and I didn't realise it would be such a hard adjustment that would take nearly 3 years to really work through.