I had a really irritating experience last night with a person who was just rude and intrusive, and this meditation about personal space made me think of people like that who want to come into my space and are negative and cause me to have negative thoughts and that knot of anger in my stomach. As I meditated I imagined an invisible shield around me, bouncing people back as they approached me. It felt so liberating to breath, let my stomach expand and rise completely. So many good things come to mind that I can do in opposition to the constraints I put on myself: suck in your tummy, walk quietly, don't show upset, etc. and the constraints other people's influence make me feel.
I learned that I need to claim my space from myself and others.