Protection

from the writings of the Ben Ish Hai

"Hashem safeguards the faithful, and repays the one who goes beyond to make arrogance" [Psalms 31:24]

It is bad enough to give in to negative traits that are part of our nature. Much worse is to arouse or cultivate negative traits, as did the Erev Rav in the desert.

Ben Ish Chai

They "desired a desire" - they desired to have desire - and they said "Would that we were given meat to eat!" [Numbers 11:4]

Another example is a poor man who is haughty. Wealth naturally pushes people toward arrogance, but if a poor man is haughty, he has brought it on himself.

On the opposite end of the spectrum are those who overcome their nature to serve G-d faithfully. An example is sharp Torah scholars who could find grounds to permit the forbidden but do not [see Eruvin 13b].

G-d punishes or protects most people through angels. But He "repays the one who goes beyond to make arrogance" - G-d personally punishes anyone who goes beyond his nature to make himself arrogant. And "Hashem safeguards the faithful" - He personally protects those who go beyond their nature to serve Him faithfully.