Its not only about being yourself..
by Rick Sharma
Other than the great advice i found on here, I have some tips/advice through personal experience.
First of all, i think a lot of this has to do with focus and someones power of concentration. As you said, improving mentally is more important than the outside world. Well its easier for people with a better focus and concentration to do that
Secondly, from my past experiences i used to keep thinking "is this how I'm supposed to be??" well the answer to that is there is no real way your supposed to be other than yourself..the big idea is YOU ARE TRYING TO BE YOURSELF, NOT CHANGE YOURSELF. So there is really no point of thinking throughout the whole day looking at other people and saying "that guy is sooo cool..I think that's who I should be like." Therefore no need to grab other peoples characteristics almost every hour and changing fast.
By being yourself it doesn't only mean that you'll be confident and yourself for one day..its about being the same person for a long course of time to really know and like your true self.