איזהו גיבור, הכובד את יצרו
You’re not supposed to bottle it up , you’re supposed to fight negativity with positivity, proactively. By drumming it into yourself that everything Hashem does is good, that nobody has the ability to harm or help you without it being so ordained from shomayim.
That’s how the Torah can give us a mitzvah of working on middos, and can prohibit some outright, such as jealousy.
The more you internalize Torah values, there won’t be anything to vent about.
That’s not prohibitig one from “existing,” it’s elevating a jew above bad middos, above the pulls of the yatzer hora.
The first step in fighting the YH is to acknowledge that when it tells you that a certain mitzvah isn’t “you” or that it would mean sacrificing who you are (i.e., when girls say that tznius “isn’t them”) – that it’s the yatzer hora, and not something internal, or an expression of your true self. Your true self is an eved Hashem, a pure and holy spark of godliness which wants to be as close to Hashem as possible.