Good points already made. As regards stress I've just retired after 42 years 37 as a controller. In my experience yes you can get stress but when you unplug your headset it finishes. You can't take the job home so the stress is not a big problem. In my opinion I enjoyed one of the best jobs in the world. Go for it, if you graduate enjoy it. But, and this is a big but, don't do it just for the money.