Todays word: optimism

optimism
noun [U]
the tendency to be hopeful and to emphasize the good part of a situation rather than the bad part; the belief that good things will happen in the future:
There was a note of optimism in his voice as he spoke about the company's future.
Judging from your examination results, I think you have cause/grounds/reason for cautious optimism about getting a university place.
NOTE: The opposite is pessimism.