I think its a delicate balance tbh, it's probably not healthy but I definitely have to force myself to be as sociable and 'positive' as possible.
Which is difficult with a mood disorder, to be honest it is partially the reason I feel tired in the evenings, being around people trying to put a facade on constantly is really draining.
I feel like some of that is just partially being an introvert, I really don't want to talk to anyone at 8:30 in the morning or for 8 hours a day but it is what it is.
The office system is definitely made for extroverts.
I think you do have to force yourself to some extent but also employers can't expect people to be 100% fine all the time.
The only danger with being too open is that if an employer thinks you arent doing the job well enough as someone else could then they can find ways to push you out without explicitly firing you.
Working from home is also a hard balance, I didn't get to work from home much but when I did I loved it and it made me dread going in even more.
My current job doesn't do WFH which has its benefits and draw backs.
Honestly this wasn't really advice as I still haven't figured it out myself but more a hug of support