I was just reading a little about people who have helped to further peace and this, by Swami Satchidananda, caught my attention:  

"A harmonious life "is achieved by maintaining:

1. Our natural condition of a body of optimum health and strength.

2. Senses under total control.

3. A mind well-disciplined, clear and calm.

4. An intellect as sharp as a razor.

5. A will as strong and pliable as steel.

6. A heart full of unconditional love and compassion.

7. An ego as pure as a crystal.

8. And a life filled with Supreme Peace and Joy.

These traits may be for a super human. However, I think, Jesus, who was the son of God, had these traits and he said that we too are God's children. So that means we can have a harmonious life and be a blessing to others.