optimism
Pronunciation:
/ˈɒptɪmɪzəm//ˈɑptɪmɪzəm/noun
Definitions
A tendency to expect the best, or at least, a favourable outcome
Example: I love her youth, her beauty and above all her optimism that everything will turn out fine.
The doctrine that this world is the best of all possible worlds
The belief that good will eventually triumph over evil