I am thankful for my optimistic attitude which helps me see the positive in every situation.

Optimism has a failure mode: it can talk you out of preparing. The person certain it'll be fine is sometimes the one who didn't check the brakes.

The useful kind is narrower. Not this will go well, but I'll be able to handle it either way. That version survives contact with bad news, because it isn't a prediction about events — it's a position on your own capacity.

People holding it keep functioning when things go wrong, which is precisely when optimism is supposed to earn its keep.

If something is looming, skip the reassurance. Ask what you'd do if it went badly. The answer is usually steadier than the hope.