If you make yourself look like a target, people will notice that and notice you (good or bad).

I had a problem with the same thing you’re talking about for a long time but started using some tricks that really helped!

One thing that I figured out is that where your focus is will have a big part in this.
Even when going to into stores, or a quick stop inside a gas station, I was so focused on other people and what they might think of me that it was near impossible to go somewhere without someone else with me to direct my attention elsewhere.

I realized I had to learn about focusing in these types of situations.

My iPod became my best friend!
I’d wear it when going places by myself and I almost never thought about other people that were there because my focus was somewhere else.

After a few months I didn’t need to wear the iPod anymore.
I trained myself to focus on other things.

Sunglasses are a huge help too.
They kind of create an invisible barrier that only you can understand and you feel hidden, and it slows down your heartbeat a lot when you start to panic!