One thing I've started doing more of is speaking to everyone I come by, sometimes my anxiety can get in the way of that but the other day I exercised outside and so many people were riding a bike, walking their dogs, walking to the pool, or walking to the community gym. Almost everyone I walked by, I simply just said Hello, how are you? and complimented them. Some people said something, some people actually made little conversation, or some said nothing at all but that's okay, I didn't let that mess with my anxiety.
But it felt good acknowledging those around me, even the ones that didn't speak! I see you and you look great!