Oh, here's another "good" one:
Something I'm constantly reciting in my head is, "confidence perceived is confidence achieved." I use this simple mantra to psyche myself up and get through most business and social scenarios. Seems to work for me in short spurts but I wear out fast if I fake confidence for too long. The energy I expend on making it seem like I know what the hell I'm doing and saying is probably a lot more than the average person. Also, once my mental energy and focus is exhausted, I begin to slip up on my words as if they are tongue twisters. Or I'll just shut down and become reclusive. Some would chalk this up to being an introvert but I feel it's more anxiety based. I would assume that this anxiety stems from my stubborn perfectionism but it seems much more innate than that. It's like a constant and irritating hum in the back of my mind.