Aspirant
Part of speech: adjective
Definition: seeking advancement striving for recognition
Part of speech: noun
Definition: someone who aspires to high office etc.
Hopeful
Part of speech: adjective
Definition: Feeling or inspiring hope.
Part of speech: noun
Definition: Somebody who is hoping for success or victory.
Example sentence: Positive thinking is the notion that if you think good thoughts, things will work out well. Optimism is the feeling of thinking things will be well and be hopeful.