It took me 8 months to feel at ease with working in a large open office and even now i still feel stressed out in the environment, its hard to relax when you feel you need to cram in as much work as possible before the day ends.
I'm still quiet but I can get up and ask people questions with no trouble, i'm just not as jokey and relaxed as i want to be. Actually I only ever feel like i'm talking normally and relaxed around one person.
I can't drink any milk drinks whilst working at an office because my stomach makes noises when i stress out and its freaking embarrassing, so no milk, only water drinks.
I someitmes get these intense anxiety attacks where i start fidgeting and i have to leave the office for a few minutes just to calm down and i develop these painful stitches and tightness from internally freaking out.
socially its like high school, very gossipy and i've found it hard to make friends because people seem to be so judgemental and picky. I know I overheard a girl saying that she only talks to the people that she clicks with and another said he blocks out the people he doesnt like. So I don't know how i fit into that, I generally keep very quiet because it feels so unnatural and institutionalised at work, its hard to relax in that setting, for me personally, those who work in sales are generally very tough skinned, you can't be a "nice" harmless personality to work in sales, generally. Techies are generally very confident and have tickets on themselves otherwise they wouldn't be doing the job for long.
I've always found assistant jobs as the best, you have mild responsibilities and you can work hard and not feel too stressed out.
Socially at work its a game, just like work and heirarchy is a game, you can play it well or you can really struggle, but you can always try and you can be down to earth and remember you don't have to agree to what people say, be yourself.