It requires a much slower progression that is usually done with a more experienced mentor, who will guide you through the process and help you when you encounter these issues.
These techniques are powerful and helpful and can definitely help alleviate stress and anxiety, but like in the Nietzsche quote
“Beware that, when fighting monsters, you yourself do not become a monster... for when you gaze long into the abyss. The abyss gazes also into you”
The way we teach it in the west does not equip us for when the abyss gazes back