Stop. Stop what you're doing right now. Now visualise everything around you. Imagine yourself rebuilding the world, do you really know your surroundings right now? Are you aware of the pole that's coming up 20 feet ahead? Are you aware of the cycler coming up to your left? Are you aware of the woman sitting quietly, starting out of the window?

You should be 100% aware of everything around you, you're not going to stumble and fall. You're going to be walking with a straight back, maintaining eye-contact with everyone around you and have control. Having control of your environment is highly important, it will make you more calm and it'll project your confidence in yourself to others.

Have a nice day ;)