Translating experience into federal employment

I’ve recently been offered to interview for a Program Analyst role with FEMA. I am super excited and it would be a dream job for me. Thankfully they scheduled the interview far enough out for me to adequately prepare. I’m about a week away and am making final preparations. However, I am having an internal battle with myself. I realize that this position as a GS-9 could potentially have a few internal employees being interviewed. My work experience meets and exceeds the qualifications, but I guess I’m just psyching myself out over the diverse industries I gained my experience in (construction, government contracting, kitchen- all project management related). Does anyone have any experience with having a diverse background experience, meeting job qualifications, and ultimately being deemed the best candidate and receiving the coveted TJO?