Short: Meek
When we hear the word, "meek" we often associate it with weak. It's easy since they rhyme! But the real definition of meek is quite surprising. Meakness is the quality of utilizing or leaning on less of your power/resources/skill than you have access to. Meakness is strength under control. Ones who are powerful, but humble, patient, gentle, and self-controlled.
For instance, think of the stock trader that only risks a small portion of his assets, versus the one that plays on margin.
Matthew 5:5 (KJV):
“Blessed are the meek: for they shall inherit the earth.”
...which one will be ready to handle an unexpected change or dip in the market? Which one will be prepared to play (trade) at a higher difficulty? One will succeed, the other will be wiped out.
If you're going through life utilizing every possible ounce of power, cunning, skill, or resources at your disposal you'll be the type of person who betrays friends, lies, cheats, or steals...since latent in relationships is vulnerability and that vulnerability is tantalizing to ones who are seeking power. This vulnerability, however, is safe around the meek, for though they could use it, they will not. Not because they are afraid to, but because they choose not to.