I get the sinking feeling that achieving many of these things requires being charismatic and/or attractive and/or extroverted, of which I am none. This has not

I get the sinking feeling that achieving many of these things requires being charismatic and/or attractive and/or extroverted, of which I am none. This has not been my experience of running a software company and, while speaking for others is always risky, most of the people mentioned in that list are personal friends of mine and I think would react to "good thing you are attractive and extroverted" with gales of laughter.