Nope.
How others see us may restrict the range of options we're comfortable or capable of pursuing. The personal economics of benefit vs cost are the ultimate arbiter. And there is always the option to say "no" in any event. But it doesn't change us or define who we are.
Past behaviors sometimes establish patterns that allow us to predict the behaviors of others, and allow other people to better predict our own. But that's still just playing the odds. Past behavior is no guarantee of one's future behavior, or somebody's reaction to a given situation. Especially if that situation is outside the individual's prior scope or experience. People become significantly more unpredictable in strange surroundings and situations.
Until we internalize and actualize who we want to be it's nothing more than a personal goal. And if you start believing that you've accomplished that goal before you have actually done so, you've become delusional. (There's a lot of that present in the world motivational thinking.) Merely wanting something doesn't accomplish it. It just (hopefully) provides sufficient motivation to help you succeed in doing so. But like Yogi said: "It ain't over till it's over."
"Self" is not an abstraction nor a tug of war IMO. It's an observable dynamic between our various brain centers. There's been enough solid neurological research combined with modern imaging technology to start to give us a better understanding of its mechanisms. Be interesting to see if it one day allows us to locate and peer into the proverbial "seat of the soul." Time will tell.
But all this would take far more typing to get into and discuss online than I'm up for. So I'll leave it at that. Feel free to disagree. It's all still an open inquiry. And nobody has the come up with the final word on the subject yet.
