How do I fight the feeling it’s not going to happen?

I am struggling mentally. We are TTC #2. I want to start out by saying I know it’s early and our journey has been much shorter than many others and I acknowledge that and please don’t take my post as insensitive because I promise it’s not. With our first we conceived our first cycle. We had a chemical pregnancy. The following cycle we fell pregnant and had our daughter. While I know this is not common I know we were blessed. Flash forward to now. It’s been 2 years since conceiving her. We are not tracking due to added stress it causes. We BD every other day throughout the cycle. Our first cycle period came at CD 28. Here is is CD 27 and negative tests. I can’t help but feel this journey for baby 2 is going to take much longer and that makes it so discouraging. How do I remain optimistic but not get my hopes up too much? I know the negativity isn’t good but I also don’t want to crush myself by being too positive. Sorry for the ramble. Just looking for anything that has helped you along this journey.