optimistic
op-ti-mis-tic
adjective
Expecting good things to happen or believing that good will prevail.
"She felt optimistic about her exam results."
Thesaurus
Synonyms: sanguine, sanguineous, rosy, rose-colored, bullish, cheerful, upbeat, starry-eyed, pollyannaish, affirmative, positive
Antonyms: pessimistic