Something that I have discovered about people - if they are going to mind your business, they will always find a reason. I have had lots of comments made about my mobility devices or braces, but before that people made comments about me holding hands with my girlfriend or wife, or my haircut or hair color, or nail color, or how fast or slow I was walking, or whether I unloaded my cart fast enough in a grocery store.
Do not let other people who feel the need to comment on your business bother you. They will find some reason to be unpleasant, even if you wore long sleeves every minute of every day. Since they are always unpleasant, their words are irrelevant, and have nothing they have to say counts. Why listen to unpleasant strangers?
What matters is what the people you love say. If people who know you support you, strangers matter very little.
I say this as someone who has a lifelong severe anxiety disorder, panic attacks, and a former cutter. I have not cut in more than 7 years, so believe me when I say you can make it. Just take it one day at a time and you can make it.