It means goodness becomes so clear that you feel deeply compelled to make good choices.
Your outlook on life and existence becomes more positive because reality is experienced with more revealed goodness.
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Leah, the wife of Jacob, helps explain this emotionally.
The Torah describes her as feeling hated.
A nervous system can interpret sadness, disappointment, or longing as self-hate, rejection, or unworthiness.
Yet Leah did not become trapped inside those interpretations.
She was aware enough to express her pain, build a relationship with the Creator through it, and continue moving toward goodness.
That is emotional maturity. 
When you do not understand your feelings, they can decide your choices for you.
When you can recognize the difference between a feeling and your nervous system’s interpretation of that feeling, you gain more freedom to choose your response.
The more expert you become in your feelings, the more free choice you have.
The Messianic era is a world where that clarity becomes much more natural.
“The more expert you become in your feelings, the more free choice you have.”
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Related guides:
How does Chassidus explain the Creator? https://nextself.ai/spirituality/the-word-god-is-a-descriptive-name/
The 13 principles of faith by the Rambam have to be understood through Chabad Chassidus to be healing for the nervous system: https://nextself.ai/spirituality/beliefs-are-not-only-an-idea/
