<human>: Can you give me the gist of the text in a nutshell?

Long story short, I was hired about 8 months ago and was a great candidate to being with, but I'm pretty sure my manager chose to hire me because I told him I would work for more than a year. It's the type of job that takes a really long time to train for. It takes 8-12 months to fully understand how everything works and to start really benefiting the company by working there. It pays well, but it doesn't challenge me enough. There hasn't been a single day that's gone by that I don't wish I was doing something else. It's not the most terrible work, but I know that I could be using my talents better doing something else. I work at a small facility, so there really aren't 'other positions" available where I would be doing something completely different. In fact, my position is probably the most crucial besides being a manager or supervisor, and I have no interest in those.
<bot>: the manager hired me because he wanted someone who would stay with the position for a while, but I quickly grew out of it.