Is it normal that i wish i could see my life all the time?

I'm not always super confident, even though I just wish that I was. I see the person that I am in my head, and try to act it out, but I'm never sure if I potray my true self correctly.

My wish is that I could see how I acted in normal situations and evaluate. For some reason, I always feel like the most confident of people always know what they look/behave like. After conversations or just being out in public, I always wonder what were my facial expressions like? was my voice shakey? did I make eye contact? why was I biting my lip like a nervous coward? Sometimes, once I'm in private, I will repeat what I said to others, just to see what I came across as. (kinda like mumbling to myself--strange, right)

(I'm not intending to be cocky) but i really think I'm a great person, I'm talented, attractive, funny, and most importantly I'm nice. Yet, I sell myself short in social situations. I just wish I could see myself in a social atmosphere, so I know why I feel like that converstion was uber awkward, or why did that person glare at me.