I'm 23.
I graduated last May from a great university with a degree in engineering. My grades were solid, I had a ton of research experience, and I was all lined up to either get a job at a government lab or work on my Master's. A month before graduation, the US government sequestration started and all of my funding dropped out from under me. I graduated with no prospects and spent the next 10 months job searching while taking a few part-time graduate school classes.
In early February I was offered a job that was almost perfect for me. I'm scheduled to start in two weeks, so I've spent the last month trying to secure an apartment and get ready for my move. I hope I'm prepared, I hope I haven't forgotten anything, and I hope everything goes well. That being said, my brain has spent the last month fixated on every way I could possibly screw this up...
Part of me is excited about finally starting my career, while the rest of me is terrified that I'm going to fuck it up in ways I can't even imagine. A "worst case scenario" has already happened to me once, I hope it doesn't happen again.