Proverbs 19:8 Kabbalah

קֹֽנֶה־לֵּ֭ב אֹהֵ֣ב נַפְשׁ֑וֹ שֹׁמֵ֥ר תְּ֝בוּנָ֗ה לִמְצֹא־טֽוֹב׃

He that getteth wisdom loveth his own soul; He that keepeth understanding shall find good.

Read kabbalistic (mystical) interpretation of Proverbs 19:8: and classical mystical sources.