Optimistic means to have a positive and hopeful outlook.
I'm optimistic that you will understand the above explanation.
I'm optimistic about living to a ripe old age.
It's a bit optimistic to think you'll live to be more than 120.
I'm optimistic that you will understand the above explanation.
I'm optimistic about living to a ripe old age.
It's a bit optimistic to think you'll live to be more than 120.