Feeling optimistic

I am getting my first <a href="https://glowing.com/glow-fertility-program">IUI</a> in a few days... I want this to work so bad but I am afraid to let myself get excited or be hopeful... It's been 13 years of TTC and all the tests the doctor has ran on me and my husband have came back with good results but we are not getting pregnant on our own, so <a href="https://glowing.com/glow-fertility-program">IUI</a> is the next step. Feeling scared, nervous and optimistic... I am afraid to talk about it with people but my husband is telling everyone and everyone's response is positive but they all act like its a for sure thing and when I tell them that there's no guarantee and that the odds are against us, I'm told that I'm being negative. I don't look at it as being negative, I look at it as being realistic...