acting like some one else and being good at it

i just want it to know if you act like some one else but your self,for maybe.......a long period of time in each day,and people dont knowtice that you are acting like someone else,does that mean that you can be any body you want as long as people dont know your acting like that person, is there such thing like acting to good to be noticed your acting,...........am i confusin enybody here?

You confused me lol....But umm are you talking about another side to your own personality that no one knew about and are just learning about. they might not be saying anything because it migth just be you growing as an individual? Or are you acting completely out of character and no one is noticing?

acting completely out of character and no one is noticing

Yeah thats also called modeling, the good thing is, that this is and can be a positive thing, if you "act" like a positive cool, and confident person long enough, it can actually become who you are, its part of NLP (neural linguistic programming) practice.

People do it more often then you think, every time someone asks themselfs, what would "so and so" do in this situation, they are looking for models to base their next actions on.

now, being deceitfull is harmful, if your pretending to be good, to do something bad, then thats just plain wrong, but if your the type of person that feels his personality is lacking, and you start modelling your actions on an ideal,with the intension of becoming a better person, than in that case thats a very good practice.

There are problems with doing that. (Particularly if you are lying, or exaggerating things.)

If you're not being yourself, it will catch up with you someday. Someone may become close to you, thinking you're someone you're not, and feel mislead. You yourself may feel unsatisfied with your own life, because deep down, the person you're portraying isn't the real You.

Why take on an entirly false persona? To fit in better? The best thing a person can do for themselves, is to learn to be honest. That's the only way we can truly develop ourselves as human beings. Be yourself, and people will be drawn to you. You won't have to worry about keeping up false pretentions for the rest of your life, either!

to Adom, darkone did PM me and confirmed to me that he is doing this as a practice in order to improve himself and not cheat others.

it is very effective. to use models to improve oneself and gain self confidence etc.