Ecclesiastes 7:17 Meaning

15All things have I seen in the days of my vanity: there is a just man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his wickedness.

16Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?

17Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?

18It is good that thou shouldest take hold of this; yea, also from this withdraw not thine hand: for he that feareth God shall come forth of them all.

19Wisdom strengtheneth the wise more than ten mighty men which are in the city.