אַל־תֵּצֵ֥א לָרִ֗ב מַ֫הֵ֥ר פֶּ֣ן מַה־תַּ֭עֲשֶׂה בְּאַחֲרִיתָ֑הּ בְּהַכְלִ֖ים אֹתְךָ֣ רֵעֶֽךָ׃
Go not forth hastily to strive, lest thou know not what to do in the end thereof, when thy neighbour hath put thee to shame.
Read kabbalistic (mystical) interpretation of Proverbs 25:8: and classical mystical sources.