What is Optimism?
Hopefulness and confidence about the future or the success of something.
"the talks had been amicable and there were grounds for optimism"
Importance
"People who are optimistic are more committed to their goals, are more successful in achieving their goals, are more satisfied with their lives, and have better mental and physical health when compared to more pessimistic people," says Suzanne Segerstrom, PhD, a professor of psychology at the University of Kentucky.People who are more positive about their future have more mental strength,prepared for the future problems, are more confident and have more self belief in them.
Watch this video about Optmism for further knowledge.