There are those who live with a very self-focused view. It's nothing wrong with this attitude unless in the process we forget we are not an island and what we do will always influence others. We lead by example.
When we realize the influence we have over other people, we are more willing to accept personal responsibility for our actions and reactions to particular circumstances and situations. It challenges us to consider others needs and the consequence of our actions and words.
Think of the people you have to keep you accountable in your life. Are they able to get through to you the advice you need to succeed? Do you hold value to the words and actions made by your accountability partner so that you can also hold yourself accountable? How would your life be different if you didn't have this person in your life? We all need a good push. Accountability is one huge way to get there.