So what do you do about work?

I've got pretty extensive scarring on my arms. It's obvious it's self harm. I've kept it covered as long as I've been doing it, and I'm really not used to having my arms uncovered. I'm not sure what to do about work though. And like, the future. When I was actively self harming I had absolutely no consideration of the future because I thought I'd never get there. Now, it's more of a possibility to me, and I'm grappling with the decision of wearing short sleeves again or covering my arms for the rest of my life. Even if I did wear short sleeves, I would only really feel barely comfortable doing it outside of work. How do you be an adult in a workplace with self harm scars? I can't imagine going into a meeting and people seeing them and then still having to be professional and be taken seriously. It's one thing to just have them out in public, but with work and having to form professional relationships, it just seems impossible. Does anyone have any advice?