How can I overcome self-consciousness and just tweet without GAF? Or am I doing the right thing and the people who tweet 100x/day are actually the weird ones?
Well, "building a personal brand" is smug in itself, so there's that. Why would people care for/need another "personal brand"?
The only way to tweet and not be smug and not be weird / add to the noise is if you feel strong enough that you have something important to say.
If you don't, or worry that your opinions are just stuff you grow over, and lose all their value a few years later, then those are just casual thoughts and trivialities. (Something actually important seldom loses its value a few years later).
>How can I overcome self-consciousness and just tweet without GAF? Or am I doing the right thing and the people who tweet 100x/day are actually the weird ones?
I'd say the latter...