I graduated from a finance degree in June last year and got an offer soon after to work as an analyst at a bank. The only problem was that the contract doesn't start until a couple of weeks from now, so I've spent the last 7 months or so travelling and doing lots of different drugs. But mostly being a lazy shit.
I haven't even worked a full time job since before I started college so I'm a bit worried it'll take me a while to adjust.
Do you guys have any advice for things I can do to prepare myself?
Be worried, and you're half way there.
M-F just remember you are your bosses' bitch boi: no is not in your vocabulary. Don't use your company computer for anything besides company work and research. Your coworkers will all be very informal, but their jobs are already secured whereas yours is not.
Keep a regular sleep schedule i.e. go to sleep at 10 wake up at 6 every night.
After 6 months you can loosen up a little bit.
This sounds like good advice, thanks. What about ways to get my brain back into action again? I haven't really had to use any serious cognitive power in a long time. Should I try puzzles and brain teasers and such?
I'd just suggest reviewing anything job relevant. You aren't going to be given major responsibilities your first day on the job.
Being initially slow on the uptake can be played off as being new, and fresh out of school. In fact, lean on your coworkers a little bit to help show you the ropes, and then tell them you owe them one. This makes it seem like you look up to them and generates positive feelings. Make sure you don't take up more than a couple hours of their time per week, though, otherwise you will become a nuisance.