The problem with anxiety is that we start to make ourselves the centre of everything as if a spotlight is on us. I dont mean that in a selfish/unkind way, I just mean that we think everyone is looking at us, everyone is wondering about us, everyone is judging us etc.
OP- frankly, you arent that powerful.
You dont have the power to affect everyone to the extent that your actions are going to be remembered for all eternity and dwelt upon by others constantly throughout the day. Noone cares that you rustled a bit. At worst they would find it a minor annoyance but they arent going to be thinking about it all day, they arent going to go home and wonder about you because you simply arent that important to them. They dont care about you.
I dont say that to be unkind, I say it to bring you relief to recognise that you arent the centre of everyone's thoughts. Why would you be? YOU are thinking it because to you, you are the focus of everything and are looking at your actions through a microscope and analysing them. Noone else is. There is liberation to be found here.
To prove this to you- think about any random work colleague. Now, recall in microscopic detail every single thing they did yesterday- exactly how they made their coffee, how many times they went to the loo, everything they talked about the entire day. Exactly how many hours did you spend thinking about their routine daily actions, what they did, and what it means about that person- how much time did you actually spend wondering about this person and judging them for it? I dont mean thinking about what they think of you, I mean you thinking about what you thought of THEM? Did you then go home and think about them even more? I bet you did not.
Thoughts arent facts. Your brain is thinking these thoughts because you have created neural networks around them and its habitual. Just because you think something does not mean it's true, valid or even real. Next time you get these thoughts dont forbid them nor agree with them. Notice them passing through your mind as if you are observing them with curiosity. Feel neutral about them and let them pass like clouds across the sky. To detach even further you can think "oh aqua bear is thinking about X", "aqua bear has just had a thought about Y"- by observing them in the third person you can detach from them and take the emotional charge out of the thoughts and you dont take them on as true.
Another helpful tip is to devote 15 mins at a daily specific time to worry about what people think of you. The rule is, you cannot do it during the day- you dont need to because you will devote 15 mins at 6pm every evening to thoroughly worry about it so you've got it covered. When it gets to 6pm each day, go for it. Worry yourself into an absolute frenzy- let yourself go absolutely wild wondering about all the horrible judgments people will be making about you but then at 6.15pm you must stop. I guarantee that when it comes to 6pm you'll get bored and you wont even be able to sustain it for more than 5 mins.