Proverbs 19:16 Kabbalah

שֹׁמֵ֣ר מִ֭צְוָה שֹׁמֵ֣ר נַפְשׁ֑וֹ בּוֹזֵ֖ה דְרָכָ֣יו יומת [יָמֽוּת׃]

He that keepeth the commandment keepeth his soul; But he that despiseth His ways shall die.

Read kabbalistic (mystical) interpretation of Proverbs 19:16: and classical mystical sources.