I just got my first job in 12 years and I'm finding it very difficult adjusting. I can work a day, or a week or even a month sure, but when I think can I do this for 5 years? 10 years? 20?! My hope crumbles.

Does anyone have any tips or tricks to combat such a daunting goal? At the moment I'm just doing the "one day at a time" thing and trying not to think about 10 or 20 years in the future but it's hard... Maybe I just need some time to adjust and get in the swing of things or something.