What are your thoughts on Being honest about needing quiet time?

Its a good thing sometimes you need that to think clearly

if i want quiet time i just outright say i want quiet time. i have personally not had an issue with someone getting upset about it

Usually I mention at different times in different ways that I like a lot of space. People aren't always very good about respecting it though.

I would suggest you just tell them you feel better after time alone. It helps to recharge, gain clarity and focus. And it can make it better for them as well, you being in your calmer more regulated state.

Put up a real or electronic do not disturb sign: sign on door/cubicle, change status to do not disturb in Slack, Messaging Up, WhatsApp, etc. I know when I can be interrupted or when I need no interruptions.

Errbody needs some quiet time or else we'll get stressed and feel disturbed. Tranquility and self time allows us to reflect and build up identity, thoughts, and exert a part of our cognition that's thirsty for use

You have to have it and those around you should want it for you

It's never been difficult for me to find a time and place to be quiet so I don't really see the problem. What is the situation?