Seeking advice on managing Asperger symptom

Hi,
I just get diagnosed with ASD recently. I’ve noise sensitivity to coughing, and sound of hmmm, as previously I experience fear to people, always hiding my face as I’ve OCD as well with intrusive thought about how other think I’m a freak. I always cough when I see people in front of me, or passing by, and it wasn’t done on purpose, and there’s guilt to people around me.
As I recovered from social anxiety, OCD, GAD, I developed the sound sensitivity and have anger issue with those sound. Even though I’ve tried to get use to noise by being a noisy person, the sound still make me find it hard to focus and think in a way that can help me to improve my work. I constantly have to remind myself to ignore the sound, and it make half of my brain working on my task, which mean I only manage to get my work done, but unable to improve it.
As an Asperger, I found social hard, and just take off the mask cuz I find it too tiring to think about other and losing myself.
I would like to ask for advice to help manage the symptoms and get promotion at work.
sincerely, thanks in advance for any advice,
Rachel