While the statement in and of itself is true, too much introspection is not good either.
That is introverting and what people who mean you no good wish to do to you.
So as a solo action, the oppoisite is much more likely to be correct, extroversion – where you look out at the environment and in truth, this has far more workability as evidenced by the success I have had in running extroversion techniques on others. In fact one girl I met dog walking in the park claimed that 5 minutes of me doing that gave her a better result than years of psychologists and psychiatrists. OK, considering psychiatry is destructive, not a high bar to get over, but you get the point.
Not to say you cannot benefit hugely from establishing what is your basic purpose, which requires an understanding of your talents and personality, but even then, many (most) would find that a far easier task to perform when assisted by another.
