Optimist

a person who always expects good things to happen or things to be successful.

I'm an eternal optimist—I'm sure things will get better.
He’s an incurable optimist.
Pete, ever the optimist, said things were bound to improve.

"Optimist"

a person who always expects good things to happen or things to be successful.

I'm an eternal optimist—I'm sure things will get better.
He’s an incurable optimist.
Pete, ever the optimist, said things were bound to improve.