I think "being myself" possibly means something different to me than to others. Like you, I don't find authenticity or honesty to necessarily "be me". However, I also don't necessarily think that being free, without self-censoring is "me" either.

Instead, "being myself" means that I'm happy with my actions. Understanding the results of my actions is key to that. I spend a great deal of effort considering if my first impulse will achieve what I would like it to. I spend equal amounts of effort considering whether my past efforts were what I wanted and thinking of ways to improve.

Lots of things I do are "manufactured". For example, I make a point of trying to find something nice and true to say to people every day. I go to a great deal of effort to ensure that what I say is different each day. I find that it makes people happy. I find that it makes me happy. It forces me to work really hard to discover nice things. It's not my first impulse by any stretch of the imagination, but rather something I decided to do because I really, really like it.

So "being myself" means simply being the person I like best. It means understanding and following my values. It means striving to be happier and more satisfied with everything I do every day. It's certainly not about making my life easier.