by Susan M. Heathfield, About.com
The power of optimism cannot be over-rated as a factor in success and personal growth and development. Optimism allows you to see the positive aspects of any situation and enables you to capitalize on each possibility. Optimism may be partly responsible for success in most aspects of life. Some research exists that demonstrates that optimism results in higher achievement.
See more at Optimism: The Power of Optimistic Thinking.