Something that comes to mind, is sometimes when I try to be optimistic it feels right, and sometimes it feels like I'm ignoring an issue.

I have zero awareness of which is which for you, how you feel about one thing vs another, however it's okay to be optimistic about some things, and not about others. And those feelings for better or worse will change all the time as we live life.

So when I hear "I need to be optimistic" my gut reaction is there's something that is causing us to feel pessimistic about this and optimism will come on it's own once we feel we've tried the best we can to figure out what needs to be done.

And often the answer isn't quick. Sometimes simple, but never quick at least in my experience