Realizing that people who find fault with others are possibly passing up on the most important part of their relationship. Getting to understanding that person: could be your spouse, children, coworker, salesperson, etc...
The indifference that a person holds maybe a great asset to you. For any reason looking to change someone by means of power of control, is merely going to change them because of two reasons: obedience / fear. Both of these will undoubtedly build the relationship into resentment. Rather than actually transformation.
You can not make a walnut into a pine tree.
Take a few minutes to find out about your Temperament:
This will open your eyes to more understanding of not only your self but, others.