To a large degree, since the beginning of time, charisma or the lack of it has impacted upon those in quest of acclaim. As media expands, this has become ever more vital. Thus, demeanor if unappealing, can defeat one's likelihood of success, causing the death of prospects whilst they are still embryonic.
The secret of success in society is a certain heartiness and sympathy. A man who is not happy in company, cannot find any word in his memory that will fit the occasion; all his information is a little impertinent. A man who is happy there, finds in every turn of the conversation occasions for the introduction of what he has to say. The favorites of society are able men, and of more spirit than wit, who have no uncomfortable egotism, but who exactly fill the hour and the company, contended and contenting.
Begin and proceed on a settled conviction that but little is permitted to any man to do or to know, and if he complies with the first grand laws, he shall do well.
Believe nothing,
No matter where you read it,
Or who has said it,
Not even if I have said it,
Unless it agrees with your own reason
And your own common sense.
I do not deny that many appear to have succeeded in a material way by cutting corners and by manipulating associates, both in their professional and in their personal lives. But material success is possible in this world and far more satisfying when it comes without exploiting others.