The notion of defining 'an individual as being made up of soft plastic and diffirent environments as the molding agent' is rather intriguing! However, having said that, the characteristics of the individual also comes into question. Some of us are more adaptive than others; as in some might be more flexible and versatile whilst others being more rigid and stiff, concerning donning different masks.
Even though, to an extent, we do play various roles in different environments and settings. For instance, a prison warden may act more benevolently around his home, rather than at work in a prison. He may be more jovial at his local pub with his mates, in contrary to setting out rules for new inmates at the prison, where he works. All of us don masks from time to time, which reminds me of the film, "Mask", starring Jim Carrey. We all reflect on the masks we choose to don to an extent, whilst preserving certain qualities that make us who we are...and in doing so, it does not make us fake, rather distinguishes us from others in defining how we are in different environments, and in the process further outlining the characteristics that we all possess.
As I am writing, at this very instant, I have chosen a particular manner of writing and somewhat articulate way of expressing myself, in getting the point across. In an informal email to a mate, I would not have chosen this particular way to express myself, rather it would have been full of contractions, colloquial expressions and an array of political incorrectness among other qualities. However, I would still be me albeit the variations in syntax and vocabulary...