“A feeling or belief that good things will happen in the future : a feeling or belief that what you hope for will happen.” This is how Merriam-Webster Online defines optimism.
The other day, I said to my husband, “You know, I’m the most optimistic person you’ve ever known.” With a blank stare, he stood there, looking at me. I knew he was thinking, “On what planet are YOU considered optimistic?!”
“Think about it,” I said, “I never give up. I always keep trying to get better.”
He said, “I’d call that persistent, not optimistic.”
I sat for a moment, understanding where he was coming from…19 years of my depression and anxiety affecting our lives for the worse. I knew I had to explain:
“I am persistent because I know there is an outcome that is better than the past. I’m optimistic because, even though there are times I feel as though I’m broken, I stand myself up again and again, fighting for a better tomorrow. Why would I keep trying if I didn’t have HOPE for a better future?”
So, thank you anxiety and depression for teaching me how to be the ultimate optimist.
Redheadcase's Mental Health Recovery 
I had to smile about the dialog between you and your husband