I am really high and I just had an epiphany about why people with anxiety can be viewed as being a 'rude/unfriendly/unhappy/unwelcoming/etc.

It's because we are engaging in behaviour that people who are those trails, would be acting like. Forcing yourself to be optimistic will vastly improve your well-being, mindfulness and ability to see the world in a better light and thus be genuinely joyful to others without even trying