Just started TTC, how can I keep from getting my hopes up?

Rebecca
About to start the TWW for our first month officially trying. My husband is so confident that I'm pregnant, rubs my belly and talks like it's a done deal. I'm not as sure, I've been preparing for it to take time. But now I'm getting more excited, and the idea of a BFN breaks my heart. Does anyone have anything they do that helps keep them grounded throughout this process?