Alan Deutschman in "Change or Die" wrote:

People are blind to their own faults...but their flaws are easily seen by everyone around them.

more about A. Deutschman here


also from the same book/author:

Even though change is a vital part of life, people crave a feeling of consistency and continuity.

Anita Shreve in "Light in Snow" wrote:

People are predictable...We go back to the places that once gave us a jolt.