Proverbs regarding attitude and demeanor
The words of a person's mouth are like deep waters, and the fountain of wisdom is like a flowing brook.
Prov. 18:4 (read whole chapter)
The eye that mocks at a father and despises obeying a mother - the ravens of the valley will peck it out and the young vultures will eat it.
Prov. 30:17 (read whole chapter)