Righteous Over Much is Not Righteous

Ecclesiastes 7:15-17
(15)  All 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.
(16)  Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?
(17)  Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?

Righteous Overmuch is Not Righteous

How overly strict standards destroy that which they mean to uphold
And
How being over wise in regards to lying causes one to be a liar
Or
Should Christians Ever Tell Lies? part 3

Using the examples of the overwise Mennonite view of divorce and non-resistance.