Moving on

My husband and I recently seperated. New years day to be exact. he told me today that he was done he had time to think, I still think there is a chance of reconciliation. Am I dumb for thinking that or should I hang on to my hope and fight for my marriage?

When he told me he was done. he said that's how we he felt recently but whose to say in a couple weeks or some months he'll feel differently.

I'm very confused s everyone has told me to give him time to think. that he'll come around that after 8years and 3 kids he couldbt possibly leave just like that.