Feeling better with 気が晴れる

気持(きも)ちがすっきりする。

To feel relieved.

Goo Dictionary

気(き)が晴(は)れる means to feel better, to feel as if a weight has been lifted from one’s shoulders. Your 気 (mood, feelings) does the action of 晴れる (clearing up).

Examples

Feeling a bit better with 気が晴れる

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