I'm a software developer. I don't get overwhelmed by bigger problems anymore. I've gotten really really really good at debugging. I was good going in, but I've gotten a lot more experience. I am now able to confidently lead a team on a project. My ability to communicate with both technical and non-technical members has significantly improved. I care more about my technical skills, how I do my job, my professional image, and my career direction than I did when I started. When I first got started I had a very, "this is just a job" attitude.
My real first job was McDonalds, but I'm assuming we aren't talking about that.