γνῶθι σεαυτόν (know thyself)- an Ancient Greek aphorism was carved into the stone forecourt of the Temple of Apollo at Delphi.

The philosopher Socrates expanded its form to "The unexamined life is not worth living".

Today, in modern psychology, we have the "big five" personality traits - perhaps yet another variant on Ancient Greek Wisdom.

For the advocate, it needn't matter your personality type or your nature. All you need to be effective, is that you master what you are given by birth - agreeable or disagreeable, open or closed. The variants matter not, only the root and original aphorism. Throw in a good dose of courage and determination, and you are cooking with fire.